22780039 has 2 divisors, whose sum is σ = 22780040. Its totient is φ = 22780038.

The previous prime is 22780033. The next prime is 22780061. The reversal of 22780039 is 93008722.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22780039 - 2¹⁵ = 22747271 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22780033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11390019 + 11390020.

It is an arithmetic number, because the mean of its divisors is an integer number (11390020).

Almost surely, 2^22780039 is an apocalyptic number.

22780039 is a deficient number, since it is larger than the sum of its proper divisors (1).

22780039 is an equidigital number, since it uses as much as digits as its factorization.

22780039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 22780039 is about 4772.8439111289. The cubic root of 22780039 is about 283.4772130447.

The spelling of 22780039 in words is "twenty-two million, seven hundred eighty thousand, thirty-nine".