22238477 has 2 divisors, whose sum is σ = 22238478. Its totient is φ = 22238476.

The previous prime is 22238459. The next prime is 22238479. The reversal of 22238477 is 77483222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16883881 + 5354596 = 4109^2 + 2314^2 .

It is a cyclic number.

It is not a de Polignac number, because 22238477 - 2⁶ = 22238413 is a prime.

Together with 22238479, 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 (22238479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11119238 + 11119239.

It is an arithmetic number, because the mean of its divisors is an integer number (11119239).

Almost surely, 2^22238477 is an apocalyptic number.

It is an amenable number.

22238477 is a deficient number, since it is larger than the sum of its proper divisors (1).

22238477 is an equidigital number, since it uses as much as digits as its factorization.

22238477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 35.

The square root of 22238477 is about 4715.7689722886. The cubic root of 22238477 is about 281.2127541130.

The spelling of 22238477 in words is "twenty-two million, two hundred thirty-eight thousand, four hundred seventy-seven".