22997149 has 8 divisors (see below), whose sum is σ = 26457728. Its totient is φ = 19580400.

The previous prime is 22997111. The next prime is 22997153. The reversal of 22997149 is 94179922.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22997149 - 2⁷ = 22997021 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 (22997159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9822 + ... + 11935.

It is an arithmetic number, because the mean of its divisors is an integer number (3307216).

Almost surely, 2^22997149 is an apocalyptic number.

It is an amenable number.

22997149 is a deficient number, since it is larger than the sum of its proper divisors (3460579).

22997149 is a wasteful number, since it uses less digits than its factorization.

22997149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21915.

The product of its digits is 81648, while the sum is 43.

The square root of 22997149 is about 4795.5342768038. The cubic root of 22997149 is about 284.3749469710.

The spelling of 22997149 in words is "twenty-two million, nine hundred ninety-seven thousand, one hundred forty-nine".