15297389 has 2 divisors, whose sum is σ = 15297390. Its totient is φ = 15297388.

The previous prime is 15297371. The next prime is 15297407. The reversal of 15297389 is 98379251.

It is a balanced prime because it is at equal distance from previous prime (15297371) and next prime (15297407).

It can be written as a sum of positive squares in only one way, i.e., 11526025 + 3771364 = 3395^2 + 1942^2 .

It is a cyclic number.

It is not a de Polignac number, because 15297389 - 2⁸ = 15297133 is a prime.

It is a super-2 number, since 2×15297389² = 468020220434642, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15297319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7648694 + 7648695.

It is an arithmetic number, because the mean of its divisors is an integer number (7648695).

Almost surely, 2^15297389 is an apocalyptic number.

It is an amenable number.

15297389 is a deficient number, since it is larger than the sum of its proper divisors (1).

15297389 is an equidigital number, since it uses as much as digits as its factorization.

15297389 is an odious number, because the sum of its binary digits is odd.

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

The square root of 15297389 is about 3911.1876712835. The cubic root of 15297389 is about 248.2403854164.

The spelling of 15297389 in words is "fifteen million, two hundred ninety-seven thousand, three hundred eighty-nine".