139612039 has 8 divisors (see below), whose sum is σ = 161576960. Its totient is φ = 118152216.

The previous prime is 139612021. The next prime is 139612051. The reversal of 139612039 is 930216931.

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

It is a de Polignac number, because none of the positive numbers 2^k-139612039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139611995 and 139612013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139612009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125679 + ... + 126784.

It is an arithmetic number, because the mean of its divisors is an integer number (20197120).

Almost surely, 2^139612039 is an apocalyptic number.

139612039 is a deficient number, since it is larger than the sum of its proper divisors (21964921).

139612039 is an equidigital number, since it uses as much as digits as its factorization.

139612039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252549.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 139612039 is about 11815.7538481470. The cubic root of 139612039 is about 518.7693271166.

The spelling of 139612039 in words is "one hundred thirty-nine million, six hundred twelve thousand, thirty-nine".