769479861 has 16 divisors (see below), whose sum is σ = 1087697408. Its totient is φ = 483019200.

The previous prime is 769479847. The next prime is 769479899. The reversal of 769479861 is 168974967.

It is not a de Polignac number, because 769479861 - 2²⁵ = 735925429 is a prime.

It is a super-3 number, since 3×769479861³ (a number of 28 digits) contains 333 as substring.

It is the 27740-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (769479661) by changing a digit.

It is a nontrivial repunit in base 27739.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108370 + ... + 115251.

It is an arithmetic number, because the mean of its divisors is an integer number (67981088).

Almost surely, 2^769479861 is an apocalyptic number.

It is an amenable number.

769479861 is a deficient number, since it is larger than the sum of its proper divisors (318217547).

769479861 is a wasteful number, since it uses less digits than its factorization.

769479861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223692.

The product of its digits is 4572288, while the sum is 57.

The square root of 769479861 is about 27739.5000135186. The cubic root of 769479861 is about 916.3592173267.

The spelling of 769479861 in words is "seven hundred sixty-nine million, four hundred seventy-nine thousand, eight hundred sixty-one".