139117790 has 32 divisors (see below), whose sum is σ = 288826560. Its totient is φ = 47257344.

The previous prime is 139117789. The next prime is 139117793. The reversal of 139117790 is 97711931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139117793) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1487 + ... + 16746.

It is an arithmetic number, because the mean of its divisors is an integer number (9025830).

Almost surely, 2^139117790 is an apocalyptic number.

139117790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139117790 is an abundant number, since it is smaller than the sum of its proper divisors (149708770).

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

139117790 is a wasteful number, since it uses less digits than its factorization.

139117790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18356.

The product of its (nonzero) digits is 11907, while the sum is 38.

The square root of 139117790 is about 11794.8204734112. The cubic root of 139117790 is about 518.1564277644.

The spelling of 139117790 in words is "one hundred thirty-nine million, one hundred seventeen thousand, seven hundred ninety".