139382090 has 8 divisors (see below), whose sum is σ = 250887780. Its totient is φ = 55752832.

The previous prime is 139382077. The next prime is 139382123. The reversal of 139382090 is 90283931.

It can be written as a sum of positive squares in 2 ways, for example, as 134815321 + 4566769 = 11611^2 + 2137^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 139382090.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6969095 + ... + 6969114.

Almost surely, 2^139382090 is an apocalyptic number.

139382090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139382090 is a deficient number, since it is larger than the sum of its proper divisors (111505690).

139382090 is a wasteful number, since it uses less digits than its factorization.

139382090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13938216.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 139382090 is about 11806.0192274958. The cubic root of 139382090 is about 518.4843563705.

The spelling of 139382090 in words is "one hundred thirty-nine million, three hundred eighty-two thousand, ninety".