39789656 has 32 divisors (see below), whose sum is σ = 79334640. Its totient is φ = 18643968.

The previous prime is 39789649. The next prime is 39789661. The reversal of 39789656 is 65698793.

It is a junction number, because it is equal to n+sod(n) for n = 39789598 and 39789607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41276 + ... + 42228.

Almost surely, 2^39789656 is an apocalyptic number.

It is an amenable number.

39789656 is a deficient number, since it is larger than the sum of its proper divisors (39544984).

39789656 is a wasteful number, since it uses less digits than its factorization.

39789656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283 (or 1279 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 53.

The square root of 39789656 is about 6307.9042478465. The cubic root of 39789656 is about 341.3946634927.

The spelling of 39789656 in words is "thirty-nine million, seven hundred eighty-nine thousand, six hundred fifty-six".