15914139 has 8 divisors (see below), whose sum is σ = 21238032. Its totient is φ = 10599840.

The previous prime is 15914131. The next prime is 15914141. The reversal of 15914139 is 93141951.

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

It is not a de Polignac number, because 15914139 - 2³ = 15914131 is a prime.

It is a super-2 number, since 2×15914139² = 506519640222642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15914131) 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, 3669 + ... + 6729.

It is an arithmetic number, because the mean of its divisors is an integer number (2654754).

Almost surely, 2^15914139 is an apocalyptic number.

15914139 is a deficient number, since it is larger than the sum of its proper divisors (5323893).

15914139 is a wasteful number, since it uses less digits than its factorization.

15914139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4797.

The product of its digits is 4860, while the sum is 33.

The square root of 15914139 is about 3989.2529375812. The cubic root of 15914139 is about 251.5326592872.

The spelling of 15914139 in words is "fifteen million, nine hundred fourteen thousand, one hundred thirty-nine".