8393990 has 32 divisors (see below), whose sum is σ = 16632864. Its totient is φ = 3024640.

The previous prime is 8393977. The next prime is 8393993. The reversal of 8393990 is 993938.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8393993) 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, 14792 + ... + 15348.

It is an arithmetic number, because the mean of its divisors is an integer number (519777).

Almost surely, 2^8393990 is an apocalyptic number.

8393990 is a deficient number, since it is larger than the sum of its proper divisors (8238874).

8393990 is a wasteful number, since it uses less digits than its factorization.

8393990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 8393990 is about 2897.2383402130. The cubic root of 8393990 is about 203.2307793033.

The spelling of 8393990 in words is "eight million, three hundred ninety-three thousand, nine hundred ninety".