15039397 has 4 divisors (see below), whose sum is σ = 15091020. Its totient is φ = 14987776.

The previous prime is 15039391. The next prime is 15039403. The reversal of 15039397 is 79393051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79393051 = 631 ⋅125821.

It is an interprime number because it is at equal distance from previous prime (15039391) and next prime (15039403).

It can be written as a sum of positive squares in 2 ways, for example, as 13771521 + 1267876 = 3711^2 + 1126^2 .

It is a cyclic number.

It is not a de Polignac number, because 15039397 - 2¹¹ = 15037349 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 (15039391) 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, 25372 + ... + 25957.

It is an arithmetic number, because the mean of its divisors is an integer number (3772755).

Almost surely, 2^15039397 is an apocalyptic number.

It is an amenable number.

15039397 is a deficient number, since it is larger than the sum of its proper divisors (51623).

15039397 is an equidigital number, since it uses as much as digits as its factorization.

15039397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51622.

The product of its (nonzero) digits is 25515, while the sum is 37.

The square root of 15039397 is about 3878.0661417774. The cubic root of 15039397 is about 246.8369328048.

The spelling of 15039397 in words is "fifteen million, thirty-nine thousand, three hundred ninety-seven".