39990255 has 16 divisors (see below), whose sum is σ = 64395744. Its totient is φ = 21191040.

The previous prime is 39990241. The next prime is 39990277. The reversal of 39990255 is 55209993.

It is not a de Polignac number, because 39990255 - 2⁹ = 39989743 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6136 + ... + 10845.

It is an arithmetic number, because the mean of its divisors is an integer number (4024734).

Almost surely, 2^39990255 is an apocalyptic number.

39990255 is a deficient number, since it is larger than the sum of its proper divisors (24405489).

39990255 is a wasteful number, since it uses less digits than its factorization.

39990255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17146.

The product of its (nonzero) digits is 109350, while the sum is 42.

The square root of 39990255 is about 6323.7848635133. The cubic root of 39990255 is about 341.9674142203.

The spelling of 39990255 in words is "thirty-nine million, nine hundred ninety thousand, two hundred fifty-five".