108307409 has 4 divisors (see below), whose sum is σ = 123779904. Its totient is φ = 92834916.

The previous prime is 108307403. The next prime is 108307427. The reversal of 108307409 is 904703801.

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 a de Polignac number, because none of the positive numbers 2^k-108307409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108307403) 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, 7736237 + ... + 7736250.

It is an arithmetic number, because the mean of its divisors is an integer number (30944976).

Almost surely, 2^108307409 is an apocalyptic number.

It is an amenable number.

108307409 is a deficient number, since it is larger than the sum of its proper divisors (15472495).

108307409 is an equidigital number, since it uses as much as digits as its factorization.

108307409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15472494.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 108307409 is about 10407.0845581267. The cubic root of 108307409 is about 476.6717221713.

The spelling of 108307409 in words is "one hundred eight million, three hundred seven thousand, four hundred nine".