22239497 has 8 divisors (see below), whose sum is σ = 25560000. Its totient is φ = 18954864.

The previous prime is 22239473. The next prime is 22239509. The reversal of 22239497 is 79493222.

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 22239497 - 2⁸ = 22239241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22239497.

It is not an unprimeable number, because it can be changed into a prime (22239407) 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 7 ways as a sum of consecutive naturals, for example, 7622 + ... + 10127.

It is an arithmetic number, because the mean of its divisors is an integer number (3195000).

Almost surely, 2^22239497 is an apocalyptic number.

It is an amenable number.

22239497 is a deficient number, since it is larger than the sum of its proper divisors (3320503).

22239497 is a wasteful number, since it uses less digits than its factorization.

22239497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17935.

The product of its digits is 54432, while the sum is 38.

The square root of 22239497 is about 4715.8771188401. The cubic root of 22239497 is about 281.2170534576.

The spelling of 22239497 in words is "twenty-two million, two hundred thirty-nine thousand, four hundred ninety-seven".