15379397 has 4 divisors (see below), whose sum is σ = 16777536. Its totient is φ = 13981260.

The previous prime is 15379391. The next prime is 15379439. The reversal of 15379397 is 79397351.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79397351 = 11 ⋅7217941.

It is a cyclic number.

It is not a de Polignac number, because 15379397 - 2¹⁰ = 15378373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15379391) 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, 699053 + ... + 699074.

It is an arithmetic number, because the mean of its divisors is an integer number (4194384).

Almost surely, 2^15379397 is an apocalyptic number.

It is an amenable number.

15379397 is a deficient number, since it is larger than the sum of its proper divisors (1398139).

15379397 is a wasteful number, since it uses less digits than its factorization.

15379397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398138.

The product of its digits is 178605, while the sum is 44.

The square root of 15379397 is about 3921.6574302200. The cubic root of 15379397 is about 248.6831935946.

The spelling of 15379397 in words is "fifteen million, three hundred seventy-nine thousand, three hundred ninety-seven".