13426439 has 4 divisors (see below), whose sum is σ = 14459256. Its totient is φ = 12393624.

The previous prime is 13426433. The next prime is 13426477. The reversal of 13426439 is 93462431.

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 13426439 - 2⁴ = 13426423 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 (13426433) 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, 516389 + ... + 516414.

It is an arithmetic number, because the mean of its divisors is an integer number (3614814).

Almost surely, 2^13426439 is an apocalyptic number.

13426439 is a deficient number, since it is larger than the sum of its proper divisors (1032817).

13426439 is a wasteful number, since it uses less digits than its factorization.

13426439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032816.

The product of its digits is 15552, while the sum is 32.

The square root of 13426439 is about 3664.2105561771. The cubic root of 13426439 is about 237.6768854010.

The spelling of 13426439 in words is "thirteen million, four hundred twenty-six thousand, four hundred thirty-nine".