512397923 has 2 divisors, whose sum is σ = 512397924. Its totient is φ = 512397922.

The previous prime is 512397913. The next prime is 512397929. The reversal of 512397923 is 329793215.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 512397923 - 2²⁰ = 511349347 is a prime.

It is not a weakly prime, because it can be changed into another prime (512397929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256198961 + 256198962.

It is an arithmetic number, because the mean of its divisors is an integer number (256198962).

Almost surely, 2^512397923 is an apocalyptic number.

512397923 is a deficient number, since it is larger than the sum of its proper divisors (1).

512397923 is an equidigital number, since it uses as much as digits as its factorization.

512397923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 41.

The square root of 512397923 is about 22636.2082292949. The cubic root of 512397923 is about 800.2071978942.

The spelling of 512397923 in words is "five hundred twelve million, three hundred ninety-seven thousand, nine hundred twenty-three".