13432399 has 2 divisors, whose sum is σ = 13432400. Its totient is φ = 13432398.

The previous prime is 13432387. The next prime is 13432403. The reversal of 13432399 is 99323431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13432399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13432319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6716199 + 6716200.

It is an arithmetic number, because the mean of its divisors is an integer number (6716200).

Almost surely, 2^13432399 is an apocalyptic number.

13432399 is a deficient number, since it is larger than the sum of its proper divisors (1).

13432399 is an equidigital number, since it uses as much as digits as its factorization.

13432399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 34.

The square root of 13432399 is about 3665.0237379859. The cubic root of 13432399 is about 237.7120484770.

It can be divided in two parts, 13432 and 399, that added together give a palindrome (13831).

The spelling of 13432399 in words is "thirteen million, four hundred thirty-two thousand, three hundred ninety-nine".