8100491 has 4 divisors (see below), whose sum is σ = 9257712. Its totient is φ = 6943272.

The previous prime is 8100487. The next prime is 8100511. The reversal of 8100491 is 1940018.

8100491 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 8100491 - 2² = 8100487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8100401) 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, 578600 + ... + 578613.

It is an arithmetic number, because the mean of its divisors is an integer number (2314428).

Almost surely, 2^8100491 is an apocalyptic number.

8100491 is a deficient number, since it is larger than the sum of its proper divisors (1157221).

8100491 is a wasteful number, since it uses less digits than its factorization.

8100491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157220.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 8100491 is about 2846.1361527517. The cubic root of 8100491 is about 200.8339428634.

The spelling of 8100491 in words is "eight million, one hundred thousand, four hundred ninety-one".