137404239 has 8 divisors (see below), whose sum is σ = 209377920. Its totient is φ = 78516696.

The previous prime is 137404237. The next prime is 137404247. The reversal of 137404239 is 932404731.

137404239 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 not a de Polignac number, because 137404239 - 2¹ = 137404237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137404237) 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, 3271509 + ... + 3271550.

It is an arithmetic number, because the mean of its divisors is an integer number (26172240).

Almost surely, 2^137404239 is an apocalyptic number.

137404239 is a deficient number, since it is larger than the sum of its proper divisors (71973681).

137404239 is an equidigital number, since it uses as much as digits as its factorization.

137404239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6543069.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 137404239 is about 11721.9554256105. The cubic root of 137404239 is about 516.0202090817.

The spelling of 137404239 in words is "one hundred thirty-seven million, four hundred four thousand, two hundred thirty-nine".