15139291 has 8 divisors (see below), whose sum is σ = 15803424. Its totient is φ = 14489280.

The previous prime is 15139279. The next prime is 15139301. The reversal of 15139291 is 19293151.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15139291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15139391) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1311 + ... + 5656.

It is an arithmetic number, because the mean of its divisors is an integer number (1975428).

Almost surely, 2^15139291 is an apocalyptic number.

15139291 is a deficient number, since it is larger than the sum of its proper divisors (664133).

15139291 is an equidigital number, since it uses as much as digits as its factorization.

15139291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7061.

The product of its digits is 2430, while the sum is 31.

The square root of 15139291 is about 3890.9241832757. The cubic root of 15139291 is about 247.3822369393.

The spelling of 15139291 in words is "fifteen million, one hundred thirty-nine thousand, two hundred ninety-one".