8992921 has 12 divisors (see below), whose sum is σ = 10520832. Its totient is φ = 7664328.

The previous prime is 8992913. The next prime is 8992927. The reversal of 8992921 is 1292998.

It is not a de Polignac number, because 8992921 - 2³ = 8992913 is a prime.

It is a super-2 number, since 2×8992921² = 161745256224482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8992927) 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, 10516 + ... + 11338.

It is an arithmetic number, because the mean of its divisors is an integer number (876736).

Almost surely, 2^8992921 is an apocalyptic number.

It is an amenable number.

8992921 is a deficient number, since it is larger than the sum of its proper divisors (1527911).

8992921 is a wasteful number, since it uses less digits than its factorization.

8992921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060 (or 1053 counting only the distinct ones).

The product of its digits is 23328, while the sum is 40.

The square root of 8992921 is about 2998.8199345743. The cubic root of 8992921 is about 207.9538312840.

The spelling of 8992921 in words is "eight million, nine hundred ninety-two thousand, nine hundred twenty-one".