22646449 has 4 divisors (see below), whose sum is σ = 25881664. Its totient is φ = 19411236.

The previous prime is 22646447. The next prime is 22646453. The reversal of 22646449 is 94464622.

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 22646449 - 2¹ = 22646447 is a prime.

It is a super-3 number, since 3×22646449³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22646447) 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, 1617597 + ... + 1617610.

It is an arithmetic number, because the mean of its divisors is an integer number (6470416).

Almost surely, 2^22646449 is an apocalyptic number.

It is an amenable number.

22646449 is a deficient number, since it is larger than the sum of its proper divisors (3235215).

22646449 is an equidigital number, since it uses as much as digits as its factorization.

22646449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3235214.

The product of its digits is 82944, while the sum is 37.

The square root of 22646449 is about 4758.8285323176. The cubic root of 22646449 is about 282.9219902603.

The spelling of 22646449 in words is "twenty-two million, six hundred forty-six thousand, four hundred forty-nine".