13428799 has 4 divisors (see below), whose sum is σ = 13452264. Its totient is φ = 13405336.

The previous prime is 13428773. The next prime is 13428809. The reversal of 13428799 is 99782431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99782431 = 7 ⋅14254633.

It is a cyclic number.

It is not a de Polignac number, because 13428799 - 2⁷ = 13428671 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 (13429799) 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, 10852 + ... + 12025.

It is an arithmetic number, because the mean of its divisors is an integer number (3363066).

Almost surely, 2^13428799 is an apocalyptic number.

13428799 is a deficient number, since it is larger than the sum of its proper divisors (23465).

13428799 is an equidigital number, since it uses as much as digits as its factorization.

13428799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23464.

The product of its digits is 108864, while the sum is 43.

The square root of 13428799 is about 3664.5325759229. The cubic root of 13428799 is about 237.6908102793.

The spelling of 13428799 in words is "thirteen million, four hundred twenty-eight thousand, seven hundred ninety-nine".