15329897 has 4 divisors (see below), whose sum is σ = 16723536. Its totient is φ = 13936260.

The previous prime is 15329863. The next prime is 15329917. The reversal of 15329897 is 79892351.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15329897 - 2⁶ = 15329833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15329807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 696803 + ... + 696824.

It is an arithmetic number, because the mean of its divisors is an integer number (4180884).

Almost surely, 2^15329897 is an apocalyptic number.

It is an amenable number.

15329897 is a deficient number, since it is larger than the sum of its proper divisors (1393639).

15329897 is a wasteful number, since it uses less digits than its factorization.

15329897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393638.

The product of its digits is 136080, while the sum is 44.

The square root of 15329897 is about 3915.3412367251. The cubic root of 15329897 is about 248.4161036146.

The spelling of 15329897 in words is "fifteen million, three hundred twenty-nine thousand, eight hundred ninety-seven".