139530079 has 16 divisors (see below), whose sum is σ = 153824832. Its totient is φ = 125768448.

The previous prime is 139530077. The next prime is 139530089. The reversal of 139530079 is 970035931.

139530079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139530079 - 2¹ = 139530077 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 (139530073) 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, 215334 + ... + 215980.

It is an arithmetic number, because the mean of its divisors is an integer number (9614052).

Almost surely, 2^139530079 is an apocalyptic number.

139530079 is a deficient number, since it is larger than the sum of its proper divisors (14294753).

139530079 is a wasteful number, since it uses less digits than its factorization.

139530079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026.

The product of its (nonzero) digits is 25515, while the sum is 37.

The square root of 139530079 is about 11812.2850879921. The cubic root of 139530079 is about 518.6677918018.

The spelling of 139530079 in words is "one hundred thirty-nine million, five hundred thirty thousand, seventy-nine".