12924399 has 4 divisors (see below), whose sum is σ = 17232536. Its totient is φ = 8616264.

The previous prime is 12924391. The next prime is 12924449. The reversal of 12924399 is 99342921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99342921 = 3 ⋅33114307.

It is not a de Polignac number, because 12924399 - 2³ = 12924391 is a prime.

It is a super-2 number, since 2×12924399² = 334080179022402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12924391) 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, 2154064 + ... + 2154069.

It is an arithmetic number, because the mean of its divisors is an integer number (4308134).

Almost surely, 2^12924399 is an apocalyptic number.

12924399 is a deficient number, since it is larger than the sum of its proper divisors (4308137).

12924399 is an equidigital number, since it uses as much as digits as its factorization.

12924399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4308136.

The product of its digits is 34992, while the sum is 39.

The square root of 12924399 is about 3595.0520163135. The cubic root of 12924399 is about 234.6767791229.

The spelling of 12924399 in words is "twelve million, nine hundred twenty-four thousand, three hundred ninety-nine".