13432109 has 2 divisors, whose sum is σ = 13432110. Its totient is φ = 13432108.

The previous prime is 13432087. The next prime is 13432121. The reversal of 13432109 is 90123431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6786025 + 6646084 = 2605^2 + 2578^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13432109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13432129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6716054 + 6716055.

It is an arithmetic number, because the mean of its divisors is an integer number (6716055).

Almost surely, 2^13432109 is an apocalyptic number.

It is an amenable number.

13432109 is a deficient number, since it is larger than the sum of its proper divisors (1).

13432109 is an equidigital number, since it uses as much as digits as its factorization.

13432109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 13432109 is about 3664.9841745907. The cubic root of 13432109 is about 237.7103377627.

The spelling of 13432109 in words is "thirteen million, four hundred thirty-two thousand, one hundred nine".