22379639 has 4 divisors (see below), whose sum is σ = 22407720. Its totient is φ = 22351560.

The previous prime is 22379629. The next prime is 22379689. The reversal of 22379639 is 93697322.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22379639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22379596 and 22379605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22379629) 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, 12809 + ... + 14450.

It is an arithmetic number, because the mean of its divisors is an integer number (5601930).

Almost surely, 2^22379639 is an apocalyptic number.

22379639 is a deficient number, since it is larger than the sum of its proper divisors (28081).

22379639 is an equidigital number, since it uses as much as digits as its factorization.

22379639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28080.

The product of its digits is 122472, while the sum is 41.

The square root of 22379639 is about 4730.7123142292. The cubic root of 22379639 is about 281.8065126471.

The spelling of 22379639 in words is "twenty-two million, three hundred seventy-nine thousand, six hundred thirty-nine".