137938877 has 4 divisors (see below), whose sum is σ = 142695420. Its totient is φ = 133182336.

The previous prime is 137938847. The next prime is 137938903. The reversal of 137938877 is 778839731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 101384761 + 36554116 = 10069^2 + 6046^2 .

It is a cyclic number.

It is not a de Polignac number, because 137938877 - 2⁶ = 137938813 is a prime.

It is a super-2 number, since 2×137938877² = 38054267576042258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137938847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2378228 + ... + 2378285.

It is an arithmetic number, because the mean of its divisors is an integer number (35673855).

Almost surely, 2^137938877 is an apocalyptic number.

It is an amenable number.

137938877 is a deficient number, since it is larger than the sum of its proper divisors (4756543).

137938877 is an equidigital number, since it uses as much as digits as its factorization.

137938877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4756542.

The product of its digits is 1778112, while the sum is 53.

The square root of 137938877 is about 11744.7382686887. The cubic root of 137938877 is about 516.6886187459.

The spelling of 137938877 in words is "one hundred thirty-seven million, nine hundred thirty-eight thousand, eight hundred seventy-seven".