870464742169 has 27 divisors (see below), whose sum is σ = 968679537469. Its totient is φ = 781619189120.

The previous prime is 870464742131. The next prime is 870464742187. The reversal of 870464742169 is 961247464078.

It is a happy number.

The square root of 870464742169 is 932987.

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

It can be written as a sum of positive squares in 4 ways, for example, as 141982008025 + 728482734144 = 376805^2 + 853512^2 .

It is not a de Polignac number, because 870464742169 - 2⁷ = 870464742041 is a prime.

It is a super-2 number, since 2×870464742169² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (870464742109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 913393797 + ... + 913394749.

Almost surely, 2^870464742169 is an apocalyptic number.

870464742169 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

870464742169 is the 932987-th square number.

870464742169 is the 466494-th centered octagonal number.

It is an amenable number.

870464742169 is a deficient number, since it is larger than the sum of its proper divisors (98214795300).

870464742169 is an frugal number, since it uses more digits than its factorization.

870464742169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2106 (or 1053 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 58.

The spelling of 870464742169 in words is "eight hundred seventy billion, four hundred sixty-four million, seven hundred forty-two thousand, one hundred sixty-nine".