13970239 has 2 divisors, whose sum is σ = 13970240. Its totient is φ = 13970238.

The previous prime is 13970221. The next prime is 13970251. The reversal of 13970239 is 93207931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13970239 - 2⁵ = 13970207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13970279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6985119 + 6985120.

It is an arithmetic number, because the mean of its divisors is an integer number (6985120).

Almost surely, 2^13970239 is an apocalyptic number.

13970239 is a deficient number, since it is larger than the sum of its proper divisors (1).

13970239 is an equidigital number, since it uses as much as digits as its factorization.

13970239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 13970239 is about 3737.6782900619. The cubic root of 13970239 is about 240.8433237263.

The spelling of 13970239 in words is "thirteen million, nine hundred seventy thousand, two hundred thirty-nine".