779640472 has 16 divisors (see below), whose sum is σ = 1574274240. Its totient is φ = 359834016.

The previous prime is 779640469. The next prime is 779640473. The reversal of 779640472 is 274046977.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (779640473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3748168 + ... + 3748375.

It is an arithmetic number, because the mean of its divisors is an integer number (98392140).

Almost surely, 2^779640472 is an apocalyptic number.

It is an amenable number.

779640472 is an abundant number, since it is smaller than the sum of its proper divisors (794633768).

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

779640472 is a wasteful number, since it uses less digits than its factorization.

779640472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7496562 (or 7496558 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 46.

The square root of 779640472 is about 27922.0427619471. The cubic root of 779640472 is about 920.3749542836.

The spelling of 779640472 in words is "seven hundred seventy-nine million, six hundred forty thousand, four hundred seventy-two".