22479397 has 4 divisors (see below), whose sum is σ = 22685740. Its totient is φ = 22273056.

The previous prime is 22479383. The next prime is 22479403. The reversal of 22479397 is 79397422.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19660356 + 2819041 = 4434^2 + 1679^2 .

It is a cyclic number.

It is not a de Polignac number, because 22479397 - 2⁷ = 22479269 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 (22479377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103008 + ... + 103225.

It is an arithmetic number, because the mean of its divisors is an integer number (5671435).

Almost surely, 2^22479397 is an apocalyptic number.

It is an amenable number.

22479397 is a deficient number, since it is larger than the sum of its proper divisors (206343).

22479397 is a wasteful number, since it uses less digits than its factorization.

22479397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206342.

The product of its digits is 190512, while the sum is 43.

The square root of 22479397 is about 4741.2442459759. The cubic root of 22479397 is about 282.2246127258.

The spelling of 22479397 in words is "twenty-two million, four hundred seventy-nine thousand, three hundred ninety-seven".