501949908 has 18 divisors (see below), whose sum is σ = 1268817914. Its totient is φ = 167316624.

The previous prime is 501949897. The next prime is 501949913. The reversal of 501949908 is 809949105.

It can be written as a sum of positive squares in only one way, i.e., 455737104 + 46212804 = 21348^2 + 6798^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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 5 ways as a sum of consecutive naturals, for example, 6971491 + ... + 6971562.

Almost surely, 2^501949908 is an apocalyptic number.

It is an amenable number.

501949908 is an abundant number, since it is smaller than the sum of its proper divisors (766868006).

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

501949908 is a wasteful number, since it uses less digits than its factorization.

501949908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13943063 (or 13943058 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 501949908 is about 22404.2386168332. The cubic root of 501949908 is about 794.7309496586.

The spelling of 501949908 in words is "five hundred one million, nine hundred forty-nine thousand, nine hundred eight".