405004319 has 2 divisors, whose sum is σ = 405004320. Its totient is φ = 405004318.

The previous prime is 405004289. The next prime is 405004321. The reversal of 405004319 is 913400504.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405004319 is a prime.

It is a super-2 number, since 2×405004319² = 328056996817307522, which contains 22 as substring.

Together with 405004321, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405004339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202502159 + 202502160.

It is an arithmetic number, because the mean of its divisors is an integer number (202502160).

Almost surely, 2^405004319 is an apocalyptic number.

405004319 is a deficient number, since it is larger than the sum of its proper divisors (1).

405004319 is an equidigital number, since it uses as much as digits as its factorization.

405004319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 405004319 is about 20124.7191036297. The cubic root of 405004319 is about 739.8662523071.

The spelling of 405004319 in words is "four hundred five million, four thousand, three hundred nineteen".