13442399 has 4 divisors (see below), whose sum is σ = 13905960. Its totient is φ = 12978840.

The previous prime is 13442381. The next prime is 13442417. The reversal of 13442399 is 99324431.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13442381) and next prime (13442417).

It is a cyclic number.

It is not a de Polignac number, because 13442399 - 2¹² = 13438303 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 (13442309) 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, 231737 + ... + 231794.

It is an arithmetic number, because the mean of its divisors is an integer number (3476490).

Almost surely, 2^13442399 is an apocalyptic number.

13442399 is a deficient number, since it is larger than the sum of its proper divisors (463561).

13442399 is an equidigital number, since it uses as much as digits as its factorization.

13442399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463560.

The product of its digits is 23328, while the sum is 35.

The square root of 13442399 is about 3666.3877318145. The cubic root of 13442399 is about 237.7710235673.

The spelling of 13442399 in words is "thirteen million, four hundred forty-two thousand, three hundred ninety-nine".