22432279 has 2 divisors, whose sum is σ = 22432280. Its totient is φ = 22432278.

The previous prime is 22432273. The next prime is 22432297. The reversal of 22432279 is 97223422.

Together with next prime (22432297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22432279 - 2⁵ = 22432247 is a prime.

It is a super-2 number, since 2×22432279² = 1006414282267682, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22432279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22432273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11216139 + 11216140.

It is an arithmetic number, because the mean of its divisors is an integer number (11216140).

Almost surely, 2^22432279 is an apocalyptic number.

22432279 is a deficient number, since it is larger than the sum of its proper divisors (1).

22432279 is an equidigital number, since it uses as much as digits as its factorization.

22432279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 22432279 is about 4736.2726906292. The cubic root of 22432279 is about 282.0272889106.

The spelling of 22432279 in words is "twenty-two million, four hundred thirty-two thousand, two hundred seventy-nine".