39900039 has 16 divisors (see below), whose sum is σ = 55234560. Its totient is φ = 25601760.

The previous prime is 39900031. The next prime is 39900053. The reversal of 39900039 is 93000993.

It is not a de Polignac number, because 39900039 - 2³ = 39900031 is a prime.

It is a super-2 number, since 2×39900039² = 3184026224403042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39899982 and 39900009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39900031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6282 + ... + 10920.

It is an arithmetic number, because the mean of its divisors is an integer number (3452160).

Almost surely, 2^39900039 is an apocalyptic number.

39900039 is a deficient number, since it is larger than the sum of its proper divisors (15334521).

39900039 is a wasteful number, since it uses less digits than its factorization.

39900039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4750.

The product of its (nonzero) digits is 6561, while the sum is 33.

The square root of 39900039 is about 6316.6477660227. The cubic root of 39900039 is about 341.7100668512.

The spelling of 39900039 in words is "thirty-nine million, nine hundred thousand, thirty-nine".