15139091 has 8 divisors (see below), whose sum is σ = 16572864. Its totient is φ = 13714920.

The previous prime is 15139087. The next prime is 15139121. The reversal of 15139091 is 19093151.

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

It is a cyclic number.

It is not a de Polignac number, because 15139091 - 2² = 15139087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15139001) 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, 1136 + ... + 5618.

It is an arithmetic number, because the mean of its divisors is an integer number (2071608).

Almost surely, 2^15139091 is an apocalyptic number.

15139091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15139091 is a deficient number, since it is larger than the sum of its proper divisors (1433773).

15139091 is a wasteful number, since it uses less digits than its factorization.

15139091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4801.

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

The square root of 15139091 is about 3890.8984823560. The cubic root of 15139091 is about 247.3811475738.

The spelling of 15139091 in words is "fifteen million, one hundred thirty-nine thousand, ninety-one".