938870990 has 16 divisors (see below), whose sum is σ = 1700734752. Its totient is φ = 373155744.

The previous prime is 938870983. The next prime is 938871029. The reversal of 938870990 is 99078839.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297434 + ... + 300573.

It is an arithmetic number, because the mean of its divisors is an integer number (106295922).

Almost surely, 2^938870990 is an apocalyptic number.

938870990 is a deficient number, since it is larger than the sum of its proper divisors (761863762).

938870990 is a wasteful number, since it uses less digits than its factorization.

938870990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598171.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 938870990 is about 30641.0017786625. The cubic root of 938870990 is about 979.1937663080.

The spelling of 938870990 in words is "nine hundred thirty-eight million, eight hundred seventy thousand, nine hundred ninety".