508747421 has 32 divisors (see below), whose sum is σ = 638803200. Its totient is φ = 394481664.

The previous prime is 508747339. The next prime is 508747427. The reversal of 508747421 is 124747805.

It is a cyclic number.

It is not a de Polignac number, because 508747421 - 2¹⁰ = 508746397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (508747427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1457555 + ... + 1457903.

It is an arithmetic number, because the mean of its divisors is an integer number (19962600).

Almost surely, 2^508747421 is an apocalyptic number.

It is an amenable number.

508747421 is a deficient number, since it is larger than the sum of its proper divisors (130055779).

508747421 is a wasteful number, since it uses less digits than its factorization.

508747421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645.

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 508747421 is about 22555.4299670833. The cubic root of 508747421 is about 798.3023484598.

The spelling of 508747421 in words is "five hundred eight million, seven hundred forty-seven thousand, four hundred twenty-one".