139319290 has 16 divisors (see below), whose sum is σ = 273572640. Its totient is φ = 50661520.

The previous prime is 139319261. The next prime is 139319309. The reversal of 139319290 is 92913931.

It is a super-2 number, since 2×139319290² = 38819729132208200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 633160 + ... + 633379.

It is an arithmetic number, because the mean of its divisors is an integer number (17098290).

Almost surely, 2^139319290 is an apocalyptic number.

139319290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139319290 is a deficient number, since it is larger than the sum of its proper divisors (134253350).

139319290 is a wasteful number, since it uses less digits than its factorization.

139319290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1266557.

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 139319290 is about 11803.3592675984. The cubic root of 139319290 is about 518.4064752286.

The spelling of 139319290 in words is "one hundred thirty-nine million, three hundred nineteen thousand, two hundred ninety".