501939924 has 12 divisors (see below), whose sum is σ = 1171193184. Its totient is φ = 167313304.

The previous prime is 501939923. The next prime is 501939937. The reversal of 501939924 is 429939105.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501939923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20914152 + ... + 20914175.

It is an arithmetic number, because the mean of its divisors is an integer number (97599432).

Almost surely, 2^501939924 is an apocalyptic number.

It is an amenable number.

501939924 is an abundant number, since it is smaller than the sum of its proper divisors (669253260).

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

501939924 is a wasteful number, since it uses less digits than its factorization.

501939924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41828334 (or 41828332 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 501939924 is about 22404.0158007443. The cubic root of 501939924 is about 794.7256804433.

The spelling of 501939924 in words is "five hundred one million, nine hundred thirty-nine thousand, nine hundred twenty-four".