22273439 has 2 divisors, whose sum is σ = 22273440. Its totient is φ = 22273438.

The previous prime is 22273423. The next prime is 22273483. The reversal of 22273439 is 93437222.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22273439 - 2⁴ = 22273423 is a prime.

It is a super-2 number, since 2×22273439² = 992212169773442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22270439) 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 as a sum of consecutive naturals, namely, 11136719 + 11136720.

It is an arithmetic number, because the mean of its divisors is an integer number (11136720).

Almost surely, 2^22273439 is an apocalyptic number.

22273439 is a deficient number, since it is larger than the sum of its proper divisors (1).

22273439 is an equidigital number, since it uses as much as digits as its factorization.

22273439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 32.

The square root of 22273439 is about 4719.4744410792. The cubic root of 22273439 is about 281.3600455620.

The spelling of 22273439 in words is "twenty-two million, two hundred seventy-three thousand, four hundred thirty-nine".