320412899 has 2 divisors, whose sum is σ = 320412900. Its totient is φ = 320412898.

The previous prime is 320412863. The next prime is 320412919. The reversal of 320412899 is 998214023.

It is a strong prime.

It is an emirp because it is prime and its reverse (998214023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320412899 - 2⁸ = 320412643 is a prime.

It is a Chen prime.

It is equal to p_17296274 and since 320412899 and 17296274 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (320462899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160206449 + 160206450.

It is an arithmetic number, because the mean of its divisors is an integer number (160206450).

Almost surely, 2^320412899 is an apocalyptic number.

320412899 is a deficient number, since it is larger than the sum of its proper divisors (1).

320412899 is an equidigital number, since it uses as much as digits as its factorization.

320412899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 320412899 is about 17900.0809774705. The cubic root of 320412899 is about 684.2844386301.

The spelling of 320412899 in words is "three hundred twenty million, four hundred twelve thousand, eight hundred ninety-nine".