9421988 has 12 divisors (see below), whose sum is σ = 16872240. Its totient is φ = 4601352.

The previous prime is 9421981. The next prime is 9422027. The reversal of 9421988 is 8891249.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (9421981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27218 + ... + 27561.

It is an arithmetic number, because the mean of its divisors is an integer number (1406020).

Almost surely, 2^9421988 is an apocalyptic number.

It is an amenable number.

9421988 is a deficient number, since it is larger than the sum of its proper divisors (7450252).

9421988 is a wasteful number, since it uses less digits than its factorization.

9421988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54826 (or 54824 counting only the distinct ones).

The product of its digits is 41472, while the sum is 41.

The square root of 9421988 is about 3069.5256962599. The cubic root of 9421988 is about 211.2098568728.

The spelling of 9421988 in words is "nine million, four hundred twenty-one thousand, nine hundred eighty-eight".