139001915 has 8 divisors (see below), whose sum is σ = 179633328. Its totient is φ = 102647520.

The previous prime is 139001909. The next prime is 139001917. The reversal of 139001915 is 519100931.

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

It is not a de Polignac number, because 139001915 - 2⁶ = 139001851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139001917) 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, 1069181 + ... + 1069310.

It is an arithmetic number, because the mean of its divisors is an integer number (22454166).

Almost surely, 2^139001915 is an apocalyptic number.

139001915 is a deficient number, since it is larger than the sum of its proper divisors (40631413).

139001915 is a wasteful number, since it uses less digits than its factorization.

139001915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138509.

The product of its (nonzero) digits is 1215, while the sum is 29.

The square root of 139001915 is about 11789.9073363619. The cubic root of 139001915 is about 518.0125255986.

The spelling of 139001915 in words is "one hundred thirty-nine million, one thousand, nine hundred fifteen".