8913990 has 16 divisors (see below), whose sum is σ = 21393648. Its totient is φ = 2377056.

The previous prime is 8913977. The next prime is 8914007. The reversal of 8913990 is 993198.

It is a congruent number.

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, 148537 + ... + 148596.

It is an arithmetic number, because the mean of its divisors is an integer number (1337103).

Almost surely, 2^8913990 is an apocalyptic number.

8913990 is an abundant number, since it is smaller than the sum of its proper divisors (12479658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8913990 is a wasteful number, since it uses less digits than its factorization.

8913990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297143.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 8913990 is about 2985.6305866600. The cubic root of 8913990 is about 207.3436379485.

The spelling of 8913990 in words is "eight million, nine hundred thirteen thousand, nine hundred ninety".