22397897 has 8 divisors (see below), whose sum is σ = 22987776. Its totient is φ = 21812832.

The previous prime is 22397833. The next prime is 22397911. The reversal of 22397897 is 79879322.

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

It is a cyclic number.

It is not a de Polignac number, because 22397897 - 2⁶ = 22397833 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22397197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9413 + ... + 11549.

It is an arithmetic number, because the mean of its divisors is an integer number (2873472).

Almost surely, 2^22397897 is an apocalyptic number.

It is an amenable number.

22397897 is a deficient number, since it is larger than the sum of its proper divisors (589879).

22397897 is a wasteful number, since it uses less digits than its factorization.

22397897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2407.

The product of its digits is 381024, while the sum is 47.

The square root of 22397897 is about 4732.6416513402. The cubic root of 22397897 is about 281.8831272986.

The spelling of 22397897 in words is "twenty-two million, three hundred ninety-seven thousand, eight hundred ninety-seven".