402004319 has 2 divisors, whose sum is σ = 402004320. Its totient is φ = 402004318.

The previous prime is 402004313. The next prime is 402004331. The reversal of 402004319 is 913400204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402004319 - 2²⁰ = 400955743 is a prime.

It is a super-2 number, since 2×402004319² = 323214944989307522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 402004294 and 402004303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402004313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201002159 + 201002160.

It is an arithmetic number, because the mean of its divisors is an integer number (201002160).

Almost surely, 2^402004319 is an apocalyptic number.

402004319 is a deficient number, since it is larger than the sum of its proper divisors (1).

402004319 is an equidigital number, since it uses as much as digits as its factorization.

402004319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 402004319 is about 20050.0453615447. The cubic root of 402004319 is about 738.0349122861.

The spelling of 402004319 in words is "four hundred two million, four thousand, three hundred nineteen".