13423139 has 4 divisors (see below), whose sum is σ = 14129640. Its totient is φ = 12716640.

The previous prime is 13423117. The next prime is 13423199. The reversal of 13423139 is 93132431.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13423139 - 2⁸ = 13422883 is a prime.

It is a super-2 number, since 2×13423139² = 360361321226642, which contains 22 as substring.

It is a Duffinian number.

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353222 + ... + 353259.

It is an arithmetic number, because the mean of its divisors is an integer number (3532410).

Almost surely, 2^13423139 is an apocalyptic number.

13423139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13423139 is a deficient number, since it is larger than the sum of its proper divisors (706501).

13423139 is an equidigital number, since it uses as much as digits as its factorization.

13423139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706500.

The product of its digits is 1944, while the sum is 26.

The square root of 13423139 is about 3663.7602268707. The cubic root of 13423139 is about 237.6574114365.

The spelling of 13423139 in words is "thirteen million, four hundred twenty-three thousand, one hundred thirty-nine".