137926639 has 16 divisors (see below), whose sum is σ = 147525120. Its totient is φ = 128701440.

The previous prime is 137926619. The next prime is 137926651. The reversal of 137926639 is 936629731.

It is a cyclic number.

It is not a de Polignac number, because 137926639 - 2¹³ = 137918447 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 (137926609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204607 + ... + 205279.

It is an arithmetic number, because the mean of its divisors is an integer number (9220320).

Almost surely, 2^137926639 is an apocalyptic number.

137926639 is a deficient number, since it is larger than the sum of its proper divisors (9598481).

137926639 is a wasteful number, since it uses less digits than its factorization.

137926639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930.

The product of its digits is 367416, while the sum is 46.

The square root of 137926639 is about 11744.2172578678. The cubic root of 137926639 is about 516.6733380107.

The spelling of 137926639 in words is "one hundred thirty-seven million, nine hundred twenty-six thousand, six hundred thirty-nine".