13432439 has 4 divisors (see below), whose sum is σ = 13530624. Its totient is φ = 13334256.

The previous prime is 13432429. The next prime is 13432451. The reversal of 13432439 is 93423431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93423431 = 269 ⋅347299.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13432439 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 (13432429) 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, 48887 + ... + 49160.

It is an arithmetic number, because the mean of its divisors is an integer number (3382656).

Almost surely, 2^13432439 is an apocalyptic number.

13432439 is a deficient number, since it is larger than the sum of its proper divisors (98185).

13432439 is an equidigital number, since it uses as much as digits as its factorization.

13432439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98184.

The product of its digits is 7776, while the sum is 29.

The square root of 13432439 is about 3665.0291949724. The cubic root of 13432439 is about 237.7122844357.

It can be divided in two parts, 134 and 32439, that multiplied together give a triangular number (4346826 = T₂₉₄₈).

The spelling of 13432439 in words is "thirteen million, four hundred thirty-two thousand, four hundred thirty-nine".