509858990 has 16 divisors (see below), whose sum is σ = 919844640. Its totient is φ = 203477280.

The previous prime is 509858989. The next prime is 509859011. The reversal of 509858990 is 99858905.

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, 53681 + ... + 62460.

It is an arithmetic number, because the mean of its divisors is an integer number (57490290).

Almost surely, 2^509858990 is an apocalyptic number.

509858990 is a deficient number, since it is larger than the sum of its proper divisors (409985650).

509858990 is a wasteful number, since it uses less digits than its factorization.

509858990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116587.

The product of its (nonzero) digits is 1166400, while the sum is 53.

The square root of 509858990 is about 22580.0573515658. The cubic root of 509858990 is about 798.8833326678.

The spelling of 509858990 in words is "five hundred nine million, eight hundred fifty-eight thousand, nine hundred ninety".