39920052 has 12 divisors (see below), whose sum is σ = 93146816. Its totient is φ = 13306680.

The previous prime is 39920017. The next prime is 39920053. The reversal of 39920052 is 25002993.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×39920052² = 3187221103365408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39920053) 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, 1663324 + ... + 1663347.

Almost surely, 2^39920052 is an apocalyptic number.

It is an amenable number.

39920052 is an abundant number, since it is smaller than the sum of its proper divisors (53226764).

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

39920052 is a wasteful number, since it uses less digits than its factorization.

39920052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3326678 (or 3326676 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 39920052 is about 6318.2317146493. The cubic root of 39920052 is about 341.7671887713.

The spelling of 39920052 in words is "thirty-nine million, nine hundred twenty thousand, fifty-two".