108594991 has 4 divisors (see below), whose sum is σ = 108842800. Its totient is φ = 108347184.

The previous prime is 108594989. The next prime is 108595021. The reversal of 108594991 is 199495801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 108594991 - 2¹ = 108594989 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 (108594971) 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, 123246 + ... + 124123.

It is an arithmetic number, because the mean of its divisors is an integer number (27210700).

Almost surely, 2^108594991 is an apocalyptic number.

108594991 is a deficient number, since it is larger than the sum of its proper divisors (247809).

108594991 is an equidigital number, since it uses as much as digits as its factorization.

108594991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247808.

The product of its (nonzero) digits is 116640, while the sum is 46.

The square root of 108594991 is about 10420.8920443501. The cubic root of 108594991 is about 477.0932416792.

The spelling of 108594991 in words is "one hundred eight million, five hundred ninety-four thousand, nine hundred ninety-one".