139700915 has 4 divisors (see below), whose sum is σ = 167641104. Its totient is φ = 111760728.

The previous prime is 139700909. The next prime is 139700921. The reversal of 139700915 is 519007931.

139700915 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (139700909) and next prime (139700921).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139700915 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13970087 + ... + 13970096.

It is an arithmetic number, because the mean of its divisors is an integer number (41910276).

Almost surely, 2^139700915 is an apocalyptic number.

139700915 is a deficient number, since it is larger than the sum of its proper divisors (27940189).

139700915 is an equidigital number, since it uses as much as digits as its factorization.

139700915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27940188.

The product of its (nonzero) digits is 8505, while the sum is 35.

The square root of 139700915 is about 11819.5141609120. The cubic root of 139700915 is about 518.8793853486.

The spelling of 139700915 in words is "one hundred thirty-nine million, seven hundred thousand, nine hundred fifteen".