139080931 has 16 divisors (see below), whose sum is σ = 166659840. Its totient is φ = 114570720.

The previous prime is 139080881. The next prime is 139080959.

139080931 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 139080931 - 2¹⁵ = 139048163 is a prime.

It is a super-2 number, since 2×139080931² = 38687010735653522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139080031) 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, 9660 + ... + 19273.

It is an arithmetic number, because the mean of its divisors is an integer number (10416240).

Almost surely, 2^139080931 is an apocalyptic number.

139080931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

139080931 is a deficient number, since it is larger than the sum of its proper divisors (27578909).

139080931 is a wasteful number, since it uses less digits than its factorization.

139080931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28986.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 139080931 is about 11793.2578620159. The cubic root of 139080931 is about 518.1106621947.

The spelling of 139080931 in words is "one hundred thirty-nine million, eighty thousand, nine hundred thirty-one".