8864891 has 4 divisors (see below), whose sum is σ = 10131312. Its totient is φ = 7598472.

The previous prime is 8864881. The next prime is 8864893. The reversal of 8864891 is 1984688.

It is a happy number.

8864891 is digitally balanced in base 2, 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 a de Polignac number, because none of the positive numbers 2^k-8864891 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 (8864893) 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, 633200 + ... + 633213.

It is an arithmetic number, because the mean of its divisors is an integer number (2532828).

Almost surely, 2^8864891 is an apocalyptic number.

8864891 is a deficient number, since it is larger than the sum of its proper divisors (1266421).

8864891 is a wasteful number, since it uses less digits than its factorization.

8864891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266420.

The product of its digits is 110592, while the sum is 44.

The square root of 8864891 is about 2977.3966816667. The cubic root of 8864891 is about 206.9622481661.

The spelling of 8864891 in words is "eight million, eight hundred sixty-four thousand, eight hundred ninety-one".