22819397 has 2 divisors, whose sum is σ = 22819398. Its totient is φ = 22819396.

The previous prime is 22819351. The next prime is 22819403. The reversal of 22819397 is 79391822.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15124321 + 7695076 = 3889^2 + 2774^2 .

It is a cyclic number.

It is not a de Polignac number, because 22819397 - 2¹⁴ = 22803013 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 (22819327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11409698 + 11409699.

It is an arithmetic number, because the mean of its divisors is an integer number (11409699).

Almost surely, 2^22819397 is an apocalyptic number.

It is an amenable number.

22819397 is a deficient number, since it is larger than the sum of its proper divisors (1).

22819397 is an equidigital number, since it uses as much as digits as its factorization.

22819397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 22819397 is about 4776.9652500306. The cubic root of 22819397 is about 283.6403774828.

The spelling of 22819397 in words is "twenty-two million, eight hundred nineteen thousand, three hundred ninety-seven".