39902706 has 40 divisors (see below), whose sum is σ = 94677660. Its totient is φ = 12517632.

The previous prime is 39902701. The next prime is 39902719. The reversal of 39902706 is 60720993.

It can be written as a sum of positive squares in 2 ways, for example, as 39803481 + 99225 = 6309^2 + 315^2 .

It is a super-2 number, since 2×39902706² = 3184451892244872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39902701) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4491 + ... + 9998.

Almost surely, 2^39902706 is an apocalyptic number.

39902706 is an abundant number, since it is smaller than the sum of its proper divisors (54774954).

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

39902706 is a wasteful number, since it uses less digits than its factorization.

39902706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14520 (or 14511 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 39902706 is about 6316.8588713062. The cubic root of 39902706 is about 341.7176802142.

The spelling of 39902706 in words is "thirty-nine million, nine hundred two thousand, seven hundred six".