22784339 has 2 divisors, whose sum is σ = 22784340. Its totient is φ = 22784338.

The previous prime is 22784309. The next prime is 22784347. The reversal of 22784339 is 93348722.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22784339 - 2¹² = 22780243 is a prime.

It is a super-2 number, since 2×22784339² = 1038252207333842, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22784309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11392169 + 11392170.

It is an arithmetic number, because the mean of its divisors is an integer number (11392170).

Almost surely, 2^22784339 is an apocalyptic number.

22784339 is a deficient number, since it is larger than the sum of its proper divisors (1).

22784339 is an equidigital number, since it uses as much as digits as its factorization.

22784339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 38.

The square root of 22784339 is about 4773.2943550550. The cubic root of 22784339 is about 283.4950484740.

The spelling of 22784339 in words is "twenty-two million, seven hundred eighty-four thousand, three hundred thirty-nine".