13415939 has 2 divisors, whose sum is σ = 13415940. Its totient is φ = 13415938.

The previous prime is 13415933. The next prime is 13415953. The reversal of 13415939 is 93951431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13415939 - 2⁸ = 13415683 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 13415899 and 13415908.

It is not a weakly prime, because it can be changed into another prime (13415933) 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, 6707969 + 6707970.

It is an arithmetic number, because the mean of its divisors is an integer number (6707970).

Almost surely, 2^13415939 is an apocalyptic number.

13415939 is a deficient number, since it is larger than the sum of its proper divisors (1).

13415939 is an equidigital number, since it uses as much as digits as its factorization.

13415939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 35.

The square root of 13415939 is about 3662.7774980198. Note that the first 3 decimals coincide. The cubic root of 13415939 is about 237.6149117053.

The spelling of 13415939 in words is "thirteen million, four hundred fifteen thousand, nine hundred thirty-nine".