22359749 has 4 divisors (see below), whose sum is σ = 23331936. Its totient is φ = 21387564.

The previous prime is 22359721. The next prime is 22359763. The reversal of 22359749 is 94795322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22359749 - 2¹² = 22355653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22359769) 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 3 ways as a sum of consecutive naturals, for example, 486059 + ... + 486104.

It is an arithmetic number, because the mean of its divisors is an integer number (5832984).

Almost surely, 2^22359749 is an apocalyptic number.

It is an amenable number.

22359749 is a deficient number, since it is larger than the sum of its proper divisors (972187).

22359749 is an equidigital number, since it uses as much as digits as its factorization.

22359749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972186.

The product of its digits is 136080, while the sum is 41.

The square root of 22359749 is about 4728.6096265181. The cubic root of 22359749 is about 281.7230023205.

The spelling of 22359749 in words is "twenty-two million, three hundred fifty-nine thousand, seven hundred forty-nine".