13432309 has 4 divisors (see below), whose sum is σ = 14653440. Its totient is φ = 12211180.

The previous prime is 13432283. The next prime is 13432319. The reversal of 13432309 is 90323431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13432309 - 2⁹ = 13431797 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 (13432319) 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, 610549 + ... + 610570.

It is an arithmetic number, because the mean of its divisors is an integer number (3663360).

Almost surely, 2^13432309 is an apocalyptic number.

It is an amenable number.

13432309 is a deficient number, since it is larger than the sum of its proper divisors (1221131).

13432309 is a wasteful number, since it uses less digits than its factorization.

13432309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221130.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 13432309 is about 3665.0114597365. The cubic root of 13432309 is about 237.7115175683.

The spelling of 13432309 in words is "thirteen million, four hundred thirty-two thousand, three hundred nine".