321914939 has 2 divisors, whose sum is σ = 321914940. Its totient is φ = 321914938.

The previous prime is 321914933. The next prime is 321915019. The reversal of 321914939 is 939419123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321914939 - 2⁸ = 321914683 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321914896 and 321914905.

It is not a weakly prime, because it can be changed into another prime (321914933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160957469 + 160957470.

It is an arithmetic number, because the mean of its divisors is an integer number (160957470).

Almost surely, 2^321914939 is an apocalyptic number.

321914939 is a deficient number, since it is larger than the sum of its proper divisors (1).

321914939 is an equidigital number, since it uses as much as digits as its factorization.

321914939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 41.

The square root of 321914939 is about 17941.9881562774. The cubic root of 321914939 is about 685.3520409714.

The spelling of 321914939 in words is "three hundred twenty-one million, nine hundred fourteen thousand, nine hundred thirty-nine".