15396997 has 8 divisors (see below), whose sum is σ = 19196352. Its totient is φ = 11997600.

The previous prime is 15396991. The next prime is 15397001. The reversal of 15396997 is 79969351.

15396997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-15396997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15396997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15396991) 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, 99904 + ... + 100057.

It is an arithmetic number, because the mean of its divisors is an integer number (2399544).

Almost surely, 2^15396997 is an apocalyptic number.

It is an amenable number.

15396997 is a deficient number, since it is larger than the sum of its proper divisors (3799355).

15396997 is a wasteful number, since it uses less digits than its factorization.

15396997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199979.

The product of its digits is 459270, while the sum is 49.

The square root of 15396997 is about 3923.9007377863. The cubic root of 15396997 is about 248.7780207991.

The spelling of 15396997 in words is "fifteen million, three hundred ninety-six thousand, nine hundred ninety-seven".