108391699 has 6 divisors (see below), whose sum is σ = 117371076. Its totient is φ = 100053720.

The previous prime is 108391651. The next prime is 108391721. The reversal of 108391699 is 996193801.

It is not a de Polignac number, because 108391699 - 2¹³ = 108383507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108391639) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 320517 + ... + 320854.

It is an arithmetic number, because the mean of its divisors is an integer number (19561846).

Almost surely, 2^108391699 is an apocalyptic number.

108391699 is a deficient number, since it is larger than the sum of its proper divisors (8979377).

108391699 is an equidigital number, since it uses as much as digits as its factorization.

108391699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641397 (or 641384 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 108391699 is about 10411.1334157238. The cubic root of 108391699 is about 476.7953463424.

The spelling of 108391699 in words is "one hundred eight million, three hundred ninety-one thousand, six hundred ninety-nine".