339487921 has 2 divisors, whose sum is σ = 339487922. Its totient is φ = 339487920.

The previous prime is 339487903. The next prime is 339487927. The reversal of 339487921 is 129784933.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259564321 + 79923600 = 16111^2 + 8940^2 .

It is a cyclic number.

It is not a de Polignac number, because 339487921 - 2¹¹ = 339485873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (339487927) 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, 169743960 + 169743961.

It is an arithmetic number, because the mean of its divisors is an integer number (169743961).

Almost surely, 2^339487921 is an apocalyptic number.

It is an amenable number.

339487921 is a deficient number, since it is larger than the sum of its proper divisors (1).

339487921 is an equidigital number, since it uses as much as digits as its factorization.

339487921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 339487921 is about 18425.1979907951. The cubic root of 339487921 is about 697.6026294346.

The spelling of 339487921 in words is "three hundred thirty-nine million, four hundred eighty-seven thousand, nine hundred twenty-one".