3979294863489 has 27 divisors (see below), whose sum is σ = 6318011606179. Its totient is φ = 2411653960320.

The previous prime is 3979294863487. The next prime is 3979294863491. The reversal of 3979294863489 is 9843684929793.

The square root of 3979294863489 is 1994817.

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

3979294863489 is a `hidden beast` number, since 3 + 9 + 7 + 9 + 29 + 486 + 34 + 89 = 666.

It is an interprime number because it is at equal distance from previous prime (3979294863487) and next prime (3979294863491).

It can be written as a sum of positive squares in only one way, i.e., 416261103489 + 3563033760000 = 645183^2 + 1887600^2 .

It is not a de Polignac number, because 3979294863489 - 2¹ = 3979294863487 is a prime.

It is a super-2 number, since 2×3979294863489² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3979294863487) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 65798737 + ... + 65859185.

Almost surely, 2^{3979294863489} is an apocalyptic number.

3979294863489 is the 1994817-th square number.

3979294863489 is the 997409-th centered octagonal number.

It is an amenable number.

3979294863489 is a deficient number, since it is larger than the sum of its proper divisors (2338716742690).

3979294863489 is an frugal number, since it uses more digits than its factorization.

3979294863489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120926 (or 60463 counting only the distinct ones).

The product of its digits is 5079158784, while the sum is 81.

Multiplying 3979294863489 by its sum of digits (81), we get a square (322322883942609 = 17953353²).

The spelling of 3979294863489 in words is "three trillion, nine hundred seventy-nine billion, two hundred ninety-four million, eight hundred sixty-three thousand, four hundred eighty-nine".