404012519 has 2 divisors, whose sum is σ = 404012520. Its totient is φ = 404012518.

The previous prime is 404012513. The next prime is 404012537. The reversal of 404012519 is 915210404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 404012519 - 2²⁰ = 402963943 is a prime.

It is a super-2 number, since 2×404012519² = 326452231017450722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404012513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202006259 + 202006260.

It is an arithmetic number, because the mean of its divisors is an integer number (202006260).

Almost surely, 2^404012519 is an apocalyptic number.

404012519 is a deficient number, since it is larger than the sum of its proper divisors (1).

404012519 is an equidigital number, since it uses as much as digits as its factorization.

404012519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 404012519 is about 20100.0626615939. The cubic root of 404012519 is about 739.2618150026.

The spelling of 404012519 in words is "four hundred four million, twelve thousand, five hundred nineteen".