22439807 has 4 divisors (see below), whose sum is σ = 24165960. Its totient is φ = 20713656.

The previous prime is 22439803. The next prime is 22439831. The reversal of 22439807 is 70893422.

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 22439807 - 2² = 22439803 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22439801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 863057 + ... + 863082.

It is an arithmetic number, because the mean of its divisors is an integer number (6041490).

Almost surely, 2^22439807 is an apocalyptic number.

22439807 is a deficient number, since it is larger than the sum of its proper divisors (1726153).

22439807 is a wasteful number, since it uses less digits than its factorization.

22439807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726152.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 22439807 is about 4737.0673417210. The cubic root of 22439807 is about 282.0588336915.

The spelling of 22439807 in words is "twenty-two million, four hundred thirty-nine thousand, eight hundred seven".