22648439 has 4 divisors (see below), whose sum is σ = 24707400. Its totient is φ = 20589480.

The previous prime is 22648427. The next prime is 22648481. The reversal of 22648439 is 93484622.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22648439 - 2²⁴ = 5871223 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 (22948439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1029464 + ... + 1029485.

It is an arithmetic number, because the mean of its divisors is an integer number (6176850).

Almost surely, 2^22648439 is an apocalyptic number.

22648439 is a deficient number, since it is larger than the sum of its proper divisors (2058961).

22648439 is a wasteful number, since it uses less digits than its factorization.

22648439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2058960.

The product of its digits is 82944, while the sum is 38.

The square root of 22648439 is about 4759.0376127953. The cubic root of 22648439 is about 282.9302770381.

The spelling of 22648439 in words is "twenty-two million, six hundred forty-eight thousand, four hundred thirty-nine".