515969994 has 32 divisors (see below), whose sum is σ = 1103082624. Its totient is φ = 160497920.

The previous prime is 515969977. The next prime is 515970053. The reversal of 515969994 is 499969515.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39939 + ... + 51254.

It is an arithmetic number, because the mean of its divisors is an integer number (34471332).

Almost surely, 2^515969994 is an apocalyptic number.

515969994 is an abundant number, since it is smaller than the sum of its proper divisors (587112630).

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

515969994 is a wasteful number, since it uses less digits than its factorization.

515969994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91262.

The product of its digits is 3936600, while the sum is 57.

The square root of 515969994 is about 22714.9729033517. The cubic root of 515969994 is about 802.0623838555.

The spelling of 515969994 in words is "five hundred fifteen million, nine hundred sixty-nine thousand, nine hundred ninety-four".