9785391604 has 12 divisors (see below), whose sum is σ = 17199874944. Its totient is φ = 4871141624.

The previous prime is 9785391601. The next prime is 9785391617. The reversal of 9785391604 is 4061935879.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9785391601) 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, 5387524 + ... + 5389339.

It is an arithmetic number, because the mean of its divisors is an integer number (1433322912).

Almost surely, 2^9785391604 is an apocalyptic number.

It is an amenable number.

9785391604 is a deficient number, since it is larger than the sum of its proper divisors (7414483340).

9785391604 is a wasteful number, since it uses less digits than its factorization.

9785391604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10777094 (or 10777092 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 9785391604 is about 98921.1383072395. The cubic root of 9785391604 is about 2138.9111125609.

The spelling of 9785391604 in words is "nine billion, seven hundred eighty-five million, three hundred ninety-one thousand, six hundred four".