22191489 has 32 divisors (see below), whose sum is σ = 33980800. Its totient is φ = 14486688.

The previous prime is 22191469. The next prime is 22191517. The reversal of 22191489 is 98419122.

It is not a de Polignac number, because 22191489 - 2⁷ = 22191361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22191469) 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 31 ways as a sum of consecutive naturals, for example, 159582 + ... + 159720.

It is an arithmetic number, because the mean of its divisors is an integer number (1061900).

Almost surely, 2^22191489 is an apocalyptic number.

It is an amenable number.

22191489 is a deficient number, since it is larger than the sum of its proper divisors (11789311).

22191489 is an frugal number, since it uses more digits than its factorization.

22191489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233 (or 215 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 22191489 is about 4710.7843295995. The cubic root of 22191489 is about 281.0145549550.

The spelling of 22191489 in words is "twenty-two million, one hundred ninety-one thousand, four hundred eighty-nine".