8822997891 has 12 divisors (see below), whose sum is σ = 12745146960. Its totient is φ = 5881621680.

The previous prime is 8822997881. The next prime is 8822997901. The reversal of 8822997891 is 1987992288.

It is an interprime number because it is at equal distance from previous prime (8822997881) and next prime (8822997901).

It is not a de Polignac number, because 8822997891 - 2¹¹ = 8822995843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8822997811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243226 + ... + 277136.

It is an arithmetic number, because the mean of its divisors is an integer number (1062095580).

Almost surely, 2^8822997891 is an apocalyptic number.

8822997891 is a deficient number, since it is larger than the sum of its proper divisors (3922149069).

8822997891 is a wasteful number, since it uses less digits than its factorization.

8822997891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62826 (or 62823 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 63.

The square root of 8822997891 is about 93930.8143848439. The cubic root of 8822997891 is about 2066.3571714158.

The spelling of 8822997891 in words is "eight billion, eight hundred twenty-two million, nine hundred ninety-seven thousand, eight hundred ninety-one".