405312500399 has 2 divisors, whose sum is σ = 405312500400. Its totient is φ = 405312500398.

The previous prime is 405312500389. The next prime is 405312500419. The reversal of 405312500399 is 993005213504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405312500399 - 2²⁰ = 405311451823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405312500339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202656250199 + 202656250200.

It is an arithmetic number, because the mean of its divisors is an integer number (202656250200).

Almost surely, 2^405312500399 is an apocalyptic number.

405312500399 is a deficient number, since it is larger than the sum of its proper divisors (1).

405312500399 is an equidigital number, since it uses as much as digits as its factorization.

405312500399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145800, while the sum is 41.

The spelling of 405312500399 in words is "four hundred five billion, three hundred twelve million, five hundred thousand, three hundred ninety-nine".