39865090 has 16 divisors (see below), whose sum is σ = 72161280. Its totient is φ = 15856240.

The previous prime is 39865087. The next prime is 39865103. The reversal of 39865090 is 9056893.

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, 9346 + ... + 12925.

It is an arithmetic number, because the mean of its divisors is an integer number (4510080).

Almost surely, 2^39865090 is an apocalyptic number.

39865090 is a deficient number, since it is larger than the sum of its proper divisors (32296190).

39865090 is a wasteful number, since it uses less digits than its factorization.

39865090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22457.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 39865090 is about 6313.8807400837. The cubic root of 39865090 is about 341.6102681712.

The spelling of 39865090 in words is "thirty-nine million, eight hundred sixty-five thousand, ninety".