108090247 has 4 divisors (see below), whose sum is σ = 108489376. Its totient is φ = 107691120.

The previous prime is 108090217. The next prime is 108090251. The reversal of 108090247 is 742090801.

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 108090247 - 2⁷ = 108090119 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 (108090217) 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, 199158 + ... + 199699.

It is an arithmetic number, because the mean of its divisors is an integer number (27122344).

Almost surely, 2^108090247 is an apocalyptic number.

108090247 is a deficient number, since it is larger than the sum of its proper divisors (399129).

108090247 is an equidigital number, since it uses as much as digits as its factorization.

108090247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399128.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 108090247 is about 10396.6459495358. The cubic root of 108090247 is about 476.3529251257.

The spelling of 108090247 in words is "one hundred eight million, ninety thousand, two hundred forty-seven".