22972849 has 3 divisors (see below), whose sum is σ = 22977643. Its totient is φ = 22968056.

The previous prime is 22972847. The next prime is 22972853. The reversal of 22972849 is 94827922.

The square root of 22972849 is 4793.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 19847025 + 3125824 = 4455^2 + 1768^2 .

It is not a de Polignac number, because 22972849 - 2¹ = 22972847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22972841) 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 2 ways as a sum of consecutive naturals, for example, 2397 + ... + 7189.

Almost surely, 2^22972849 is an apocalyptic number.

22972849 is the 4793-rd square number.

22972849 is the 2397-th centered octagonal number.

It is an amenable number.

22972849 is a deficient number, since it is larger than the sum of its proper divisors (4794).

22972849 is an frugal number, since it uses more digits than its factorization.

22972849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9586 (or 4793 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The cubic root of 22972849 is about 284.2747498179.

The spelling of 22972849 in words is "twenty-two million, nine hundred seventy-two thousand, eight hundred forty-nine".