137938997 has 16 divisors (see below), whose sum is σ = 164342400. Its totient is φ = 113306688.

The previous prime is 137938979. The next prime is 137939041. The reversal of 137938997 is 799839731.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137938997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137938597) 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 in 15 ways as a sum of consecutive naturals, for example, 13379 + ... + 21327.

It is an arithmetic number, because the mean of its divisors is an integer number (10271400).

Almost surely, 2^137938997 is an apocalyptic number.

It is an amenable number.

137938997 is a deficient number, since it is larger than the sum of its proper divisors (26403403).

137938997 is an equidigital number, since it uses as much as digits as its factorization.

137938997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8060.

The product of its digits is 2571912, while the sum is 56.

The square root of 137938997 is about 11744.7433773582. The cubic root of 137938997 is about 516.6887685770.

The spelling of 137938997 in words is "one hundred thirty-seven million, nine hundred thirty-eight thousand, nine hundred ninety-seven".