789740856 has 24 divisors (see below), whose sum is σ = 2138881680. Its totient is φ = 263246928.

The previous prime is 789740851. The next prime is 789740869. The reversal of 789740856 is 658047987.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×789740856² = 1247381239271225472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (789740851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5484240 + ... + 5484383.

It is an arithmetic number, because the mean of its divisors is an integer number (89120070).

Almost surely, 2^789740856 is an apocalyptic number.

It is an amenable number.

789740856 is an abundant number, since it is smaller than the sum of its proper divisors (1349140824).

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

789740856 is a wasteful number, since it uses less digits than its factorization.

789740856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10968635 (or 10968628 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The square root of 789740856 is about 28102.3283021176. The cubic root of 789740856 is about 924.3324547207.

The spelling of 789740856 in words is "seven hundred eighty-nine million, seven hundred forty thousand, eight hundred fifty-six".