15399427 has 8 divisors (see below), whose sum is σ = 15631616. Its totient is φ = 15169032.

The previous prime is 15399421. The next prime is 15399431. The reversal of 15399427 is 72499351.

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-15399427 is a prime.

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 15399427.

It is not an unprimeable number, because it can be changed into a prime (15399421) 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, 31378 + ... + 31864.

It is an arithmetic number, because the mean of its divisors is an integer number (1953952).

Almost surely, 2^15399427 is an apocalyptic number.

15399427 is a deficient number, since it is larger than the sum of its proper divisors (232189).

15399427 is a wasteful number, since it uses less digits than its factorization.

15399427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897.

The product of its digits is 68040, while the sum is 40.

The square root of 15399427 is about 3924.2103664304. The cubic root of 15399427 is about 248.7911077404.

The spelling of 15399427 in words is "fifteen million, three hundred ninety-nine thousand, four hundred twenty-seven".