22299917 has 2 divisors, whose sum is σ = 22299918. Its totient is φ = 22299916.

The previous prime is 22299911. The next prime is 22299919. The reversal of 22299917 is 71999222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21058921 + 1240996 = 4589^2 + 1114^2 .

It is a cyclic number.

It is not a de Polignac number, because 22299917 - 2⁶ = 22299853 is a prime.

Together with 22299919, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22299911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11149958 + 11149959.

It is an arithmetic number, because the mean of its divisors is an integer number (11149959).

Almost surely, 2^22299917 is an apocalyptic number.

It is an amenable number.

22299917 is a deficient number, since it is larger than the sum of its proper divisors (1).

22299917 is an equidigital number, since it uses as much as digits as its factorization.

22299917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 41.

The square root of 22299917 is about 4722.2787931252. The cubic root of 22299917 is about 281.4714922225.

The spelling of 22299917 in words is "twenty-two million, two hundred ninety-nine thousand, nine hundred seventeen".