12398951 has 4 divisors (see below), whose sum is σ = 12407304. Its totient is φ = 12390600.

The previous prime is 12398941. The next prime is 12398957. The reversal of 12398951 is 15989321.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12398951 - 2¹⁰ = 12397927 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 (12398957) 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, 1280 + ... + 5141.

It is an arithmetic number, because the mean of its divisors is an integer number (3101826).

Almost surely, 2^12398951 is an apocalyptic number.

12398951 is a deficient number, since it is larger than the sum of its proper divisors (8353).

12398951 is an equidigital number, since it uses as much as digits as its factorization.

12398951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8352.

The product of its digits is 19440, while the sum is 38.

The square root of 12398951 is about 3521.2144211905. The cubic root of 12398951 is about 231.4523783763.

The spelling of 12398951 in words is "twelve million, three hundred ninety-eight thousand, nine hundred fifty-one".