108391001 has 4 divisors (see below), whose sum is σ = 109508532. Its totient is φ = 107273472.

The previous prime is 108390983. The next prime is 108391013. The reversal of 108391001 is 100193801.

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

It can be written as a sum of positive squares in 2 ways, for example, as 75672601 + 32718400 = 8699^2 + 5720^2 .

It is a cyclic number.

It is not a de Polignac number, because 108391001 - 2⁶ = 108390937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (108391021) 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, 558620 + ... + 558813.

It is an arithmetic number, because the mean of its divisors is an integer number (27377133).

Almost surely, 2^108391001 is an apocalyptic number.

It is an amenable number.

108391001 is a deficient number, since it is larger than the sum of its proper divisors (1117531).

108391001 is an equidigital number, since it uses as much as digits as its factorization.

108391001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117530.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 108391001 is about 10411.0998938633. The cubic root of 108391001 is about 476.7943228819.

The spelling of 108391001 in words is "one hundred eight million, three hundred ninety-one thousand, one".