22842397 has 2 divisors, whose sum is σ = 22842398. Its totient is φ = 22842396.

The previous prime is 22842383. The next prime is 22842419. The reversal of 22842397 is 79324822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18267076 + 4575321 = 4274^2 + 2139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22842397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22842307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11421198 + 11421199.

It is an arithmetic number, because the mean of its divisors is an integer number (11421199).

Almost surely, 2^22842397 is an apocalyptic number.

It is an amenable number.

22842397 is a deficient number, since it is larger than the sum of its proper divisors (1).

22842397 is an equidigital number, since it uses as much as digits as its factorization.

22842397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 37.

The square root of 22842397 is about 4779.3720298801. The cubic root of 22842397 is about 283.7356405627.

The spelling of 22842397 in words is "twenty-two million, eight hundred forty-two thousand, three hundred ninety-seven".