22549639 has 8 divisors (see below), whose sum is σ = 25868288. Its totient is φ = 19255320.

The previous prime is 22549621. The next prime is 22549661. The reversal of 22549639 is 93694522.

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

It is not a de Polignac number, because 22549639 - 2⁵ = 22549607 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 (22549619) by changing a digit.

It is a Zeisel number, with parameters (44, -37).

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4047 + ... + 7840.

It is an arithmetic number, because the mean of its divisors is an integer number (3233536).

Almost surely, 2^22549639 is an apocalyptic number.

22549639 is a deficient number, since it is larger than the sum of its proper divisors (3318649).

22549639 is a wasteful number, since it uses less digits than its factorization.

22549639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12165.

The product of its digits is 116640, while the sum is 40.

The square root of 22549639 is about 4748.6460175507. The cubic root of 22549639 is about 282.5182654543.

The spelling of 22549639 in words is "twenty-two million, five hundred forty-nine thousand, six hundred thirty-nine".