15384397 has 4 divisors (see below), whose sum is σ = 17582176. Its totient is φ = 13186620.

The previous prime is 15384377. The next prime is 15384403. The reversal of 15384397 is 79348351.

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: 79348351 = 19 ⋅4176229.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15384397 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 (15384367) 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, 1098879 + ... + 1098892.

It is an arithmetic number, because the mean of its divisors is an integer number (4395544).

Almost surely, 2^15384397 is an apocalyptic number.

It is an amenable number.

15384397 is a deficient number, since it is larger than the sum of its proper divisors (2197779).

15384397 is an equidigital number, since it uses as much as digits as its factorization.

15384397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197778.

The product of its digits is 90720, while the sum is 40.

The square root of 15384397 is about 3922.2948639795. The cubic root of 15384397 is about 248.7101404951.

The spelling of 15384397 in words is "fifteen million, three hundred eighty-four thousand, three hundred ninety-seven".