137373239 has 2 divisors, whose sum is σ = 137373240. Its totient is φ = 137373238.

The previous prime is 137373169. The next prime is 137373241. The reversal of 137373239 is 932373731.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137373239 is a prime.

It is a super-2 number, since 2×137373239² = 37742813586702242, which contains 22 as substring.

Together with 137373241, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137373259) 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, 68686619 + 68686620.

It is an arithmetic number, because the mean of its divisors is an integer number (68686620).

Almost surely, 2^137373239 is an apocalyptic number.

137373239 is a deficient number, since it is larger than the sum of its proper divisors (1).

137373239 is an equidigital number, since it uses as much as digits as its factorization.

137373239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71442, while the sum is 38.

The square root of 137373239 is about 11720.6330460432. The cubic root of 137373239 is about 515.9813994357.

The spelling of 137373239 in words is "one hundred thirty-seven million, three hundred seventy-three thousand, two hundred thirty-nine".