139568015 has 12 divisors (see below), whose sum is σ = 176762664. Its totient is φ = 105776496.

The previous prime is 139567973. The next prime is 139568029. The reversal of 139568015 is 510865931.

It is not a de Polignac number, because 139568015 - 2⁶ = 139567951 is a prime.

It is a super-2 number, since 2×139568015² = 38958461622080450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139568015.

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 11 ways as a sum of consecutive naturals, for example, 36857 + ... + 40466.

It is an arithmetic number, because the mean of its divisors is an integer number (14730222).

Almost surely, 2^139568015 is an apocalyptic number.

139568015 is a deficient number, since it is larger than the sum of its proper divisors (37194649).

139568015 is an equidigital number, since it uses as much as digits as its factorization.

139568015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77366 (or 77347 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 139568015 is about 11813.8907646888. The cubic root of 139568015 is about 518.7147933720.

The spelling of 139568015 in words is "one hundred thirty-nine million, five hundred sixty-eight thousand, fifteen".