508400923 has 2 divisors, whose sum is σ = 508400924. Its totient is φ = 508400922.

The previous prime is 508400897. The next prime is 508400941. The reversal of 508400923 is 329004805.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 508400923 - 2⁹ = 508400411 is a prime.

It is not a weakly prime, because it can be changed into another prime (508400983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254200461 + 254200462.

It is an arithmetic number, because the mean of its divisors is an integer number (254200462).

Almost surely, 2^508400923 is an apocalyptic number.

508400923 is a deficient number, since it is larger than the sum of its proper divisors (1).

508400923 is an equidigital number, since it uses as much as digits as its factorization.

508400923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 508400923 is about 22547.7476258716. The cubic root of 508400923 is about 798.1210712173.

The spelling of 508400923 in words is "five hundred eight million, four hundred thousand, nine hundred twenty-three".