39887090 has 16 divisors (see below), whose sum is σ = 72809280. Its totient is φ = 15729840.

The previous prime is 39887077. The next prime is 39887123. The reversal of 39887090 is 9078893.

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, 27380 + ... + 28799.

It is an arithmetic number, because the mean of its divisors is an integer number (4550580).

Almost surely, 2^39887090 is an apocalyptic number.

39887090 is a deficient number, since it is larger than the sum of its proper divisors (32922190).

39887090 is a wasteful number, since it uses less digits than its factorization.

39887090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56257.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 39887090 is about 6315.6226929734. The cubic root of 39887090 is about 341.6730971095.

The spelling of 39887090 in words is "thirty-nine million, eight hundred eighty-seven thousand, ninety".