139746079 has 4 divisors (see below), whose sum is σ = 152450280. Its totient is φ = 127041880.

The previous prime is 139746067. The next prime is 139746097. The reversal of 139746079 is 970647931.

139746079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 139746079 - 2⁷ = 139745951 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 (139746179) 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, 6352084 + ... + 6352105.

It is an arithmetic number, because the mean of its divisors is an integer number (38112570).

Almost surely, 2^139746079 is an apocalyptic number.

139746079 is a deficient number, since it is larger than the sum of its proper divisors (12704201).

139746079 is a wasteful number, since it uses less digits than its factorization.

139746079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12704200.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 139746079 is about 11821.4245757438. The cubic root of 139746079 is about 518.9352956090.

The spelling of 139746079 in words is "one hundred thirty-nine million, seven hundred forty-six thousand, seventy-nine".