139718874 has 16 divisors (see below), whose sum is σ = 285383808. Its totient is φ = 45581952.

The previous prime is 139718867. The next prime is 139718879. The reversal of 139718874 is 478817931.

139718874 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (139718879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247447 + ... + 248010.

It is an arithmetic number, because the mean of its divisors is an integer number (17836488).

Almost surely, 2^139718874 is an apocalyptic number.

139718874 is an abundant number, since it is smaller than the sum of its proper divisors (145664934).

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

139718874 is a wasteful number, since it uses less digits than its factorization.

139718874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495509.

The product of its digits is 338688, while the sum is 48.

The square root of 139718874 is about 11820.2738546956. The cubic root of 139718874 is about 518.9016189315.

The spelling of 139718874 in words is "one hundred thirty-nine million, seven hundred eighteen thousand, eight hundred seventy-four".