8538990 has 16 divisors (see below), whose sum is σ = 20493648. Its totient is φ = 2277056.

The previous prime is 8538979. The next prime is 8538991. The reversal of 8538990 is 998358.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8538991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142287 + ... + 142346.

It is an arithmetic number, because the mean of its divisors is an integer number (1280853).

Almost surely, 2^8538990 is an apocalyptic number.

8538990 is an abundant number, since it is smaller than the sum of its proper divisors (11954658).

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

8538990 is a wasteful number, since it uses less digits than its factorization.

8538990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284643.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 8538990 is about 2922.1550266884. The cubic root of 8538990 is about 204.3943257169.

The spelling of 8538990 in words is "eight million, five hundred thirty-eight thousand, nine hundred ninety".