137439739 has 8 divisors (see below), whose sum is σ = 141373232. Its totient is φ = 133539840.

The previous prime is 137439737. The next prime is 137439751. The reversal of 137439739 is 937934731.

137439739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 137439739 - 2¹ = 137439737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137439737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19 + ... + 16579.

It is an arithmetic number, because the mean of its divisors is an integer number (17671654).

Almost surely, 2^137439739 is an apocalyptic number.

137439739 is a deficient number, since it is larger than the sum of its proper divisors (3933493).

137439739 is a wasteful number, since it uses less digits than its factorization.

137439739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16797.

The product of its digits is 428652, while the sum is 46.

The square root of 137439739 is about 11723.4695802906. The cubic root of 137439739 is about 516.0646452169.

The spelling of 137439739 in words is "one hundred thirty-seven million, four hundred thirty-nine thousand, seven hundred thirty-nine".