769438920 has 64 divisors (see below), whose sum is σ = 2332149120. Its totient is φ = 203065344.

The previous prime is 769438847. The next prime is 769438931. The reversal of 769438920 is 29834967.

It is a super-2 number, since 2×769438920² = 1184072503221532800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 769438920.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21412 + ... + 44691.

It is an arithmetic number, because the mean of its divisors is an integer number (36439830).

Almost surely, 2^769438920 is an apocalyptic number.

It is an amenable number.

769438920 is an abundant number, since it is smaller than the sum of its proper divisors (1562710200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

769438920 is a wasteful number, since it uses less digits than its factorization.

769438920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66214 (or 66210 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 769438920 is about 27738.7620488010. The cubic root of 769438920 is about 916.3429650806.

The spelling of 769438920 in words is "seven hundred sixty-nine million, four hundred thirty-eight thousand, nine hundred twenty".