22421393 has 2 divisors, whose sum is σ = 22421394. Its totient is φ = 22421392.

The previous prime is 22421363. The next prime is 22421411. The reversal of 22421393 is 39312422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12730624 + 9690769 = 3568^2 + 3113^2 .

It is a cyclic number.

It is not a de Polignac number, because 22421393 - 2¹⁰ = 22420369 is a prime.

It is not a weakly prime, because it can be changed into another prime (22421353) 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, 11210696 + 11210697.

It is an arithmetic number, because the mean of its divisors is an integer number (11210697).

Almost surely, 2^22421393 is an apocalyptic number.

It is an amenable number.

22421393 is a deficient number, since it is larger than the sum of its proper divisors (1).

22421393 is an equidigital number, since it uses as much as digits as its factorization.

22421393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 26.

The square root of 22421393 is about 4735.1233352469. The cubic root of 22421393 is about 281.9816605279.

The spelling of 22421393 in words is "twenty-two million, four hundred twenty-one thousand, three hundred ninety-three".