8464974948369 has 9 divisors (see below), whose sum is σ = 12227198644219. Its totient is φ = 5643310813320.

The previous prime is 8464974948349. The next prime is 8464974948389. The reversal of 8464974948369 is 9638494794648.

It is a happy number.

The square root of 8464974948369 is 2909463.

It is a perfect power (a square), and thus also a powerful number.

8464974948369 is a `hidden beast` number, since 8 + 4 + 6 + 4 + 9 + 74 + 9 + 483 + 69 = 666.

It is an interprime number because it is at equal distance from previous prime (8464974948349) and next prime (8464974948389).

It can be written as a sum of positive squares in only one way, i.e., 82907715969 + 8382067232400 = 287937^2 + 2895180^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 8464974948369 - 2⁵ = 8464974948337 is a prime.

It is a super-2 number, since 2×8464974948369² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8464974948329) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8243479 + ... + 9213299.

Almost surely, 2^{8464974948369} is an apocalyptic number.

8464974948369 is the 2909463-rd square number.

8464974948369 is the 1454732-nd centered octagonal number.

It is an amenable number.

8464974948369 is a deficient number, since it is larger than the sum of its proper divisors (3762223695850).

8464974948369 is an frugal number, since it uses more digits than its factorization.

8464974948369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939648 (or 969824 counting only the distinct ones).

The product of its digits is 9029615616, while the sum is 81.

Multiplying 8464974948369 by its sum of digits (81), we get a square (685662970817889 = 26185167²).

The spelling of 8464974948369 in words is "eight trillion, four hundred sixty-four billion, nine hundred seventy-four million, nine hundred forty-eight thousand, three hundred sixty-nine".