22449749 has 8 divisors (see below), whose sum is σ = 25893120. Its totient is φ = 19065456.

The previous prime is 22449737. The next prime is 22449761. The reversal of 22449749 is 94794422.

It is an interprime number because it is at equal distance from previous prime (22449737) and next prime (22449761).

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 22449749 - 2⁴ = 22449733 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 (22449709) 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 7 ways as a sum of consecutive naturals, for example, 13949 + ... + 15474.

It is an arithmetic number, because the mean of its divisors is an integer number (3236640).

Almost surely, 2^22449749 is an apocalyptic number.

It is an amenable number.

22449749 is a deficient number, since it is larger than the sum of its proper divisors (3443371).

22449749 is a wasteful number, since it uses less digits than its factorization.

22449749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29539.

The product of its digits is 145152, while the sum is 41.

The square root of 22449749 is about 4738.1166089492. The cubic root of 22449749 is about 282.1004831122.

The spelling of 22449749 in words is "twenty-two million, four hundred forty-nine thousand, seven hundred forty-nine".