13423899 has 32 divisors (see below), whose sum is σ = 19906560. Its totient is φ = 8013600.

The previous prime is 13423877. The next prime is 13423901. The reversal of 13423899 is 99832431.

It is not a de Polignac number, because 13423899 - 2⁵ = 13423867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13423199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125404 + ... + 125510.

It is an arithmetic number, because the mean of its divisors is an integer number (622080).

Almost surely, 2^13423899 is an apocalyptic number.

13423899 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13423899 is a deficient number, since it is larger than the sum of its proper divisors (6482661).

13423899 is a wasteful number, since it uses less digits than its factorization.

13423899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231.

The product of its digits is 46656, while the sum is 39.

The square root of 13423899 is about 3663.8639439805. The cubic root of 13423899 is about 237.6618966324.

The spelling of 13423899 in words is "thirteen million, four hundred twenty-three thousand, eight hundred ninety-nine".