139813086 has 16 divisors (see below), whose sum is σ = 319572864. Its totient is φ = 39946584.

The previous prime is 139813057. The next prime is 139813097. The reversal of 139813086 is 680318931.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1664400 + ... + 1664483.

It is an arithmetic number, because the mean of its divisors is an integer number (19973304).

Almost surely, 2^139813086 is an apocalyptic number.

139813086 is an abundant number, since it is smaller than the sum of its proper divisors (179759778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139813086 is a wasteful number, since it uses less digits than its factorization.

139813086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3328895.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 139813086 is about 11824.2583699782. The cubic root of 139813086 is about 519.0182239731.

The spelling of 139813086 in words is "one hundred thirty-nine million, eight hundred thirteen thousand, eighty-six".