22477993 has 2 divisors, whose sum is σ = 22477994. Its totient is φ = 22477992.

The previous prime is 22477967. The next prime is 22478003. The reversal of 22477993 is 39977422.

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., 18429849 + 4048144 = 4293^2 + 2012^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22477993 is a prime.

It is not a weakly prime, because it can be changed into another prime (22477913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11238996 + 11238997.

It is an arithmetic number, because the mean of its divisors is an integer number (11238997).

Almost surely, 2^22477993 is an apocalyptic number.

It is an amenable number.

22477993 is a deficient number, since it is larger than the sum of its proper divisors (1).

22477993 is an equidigital number, since it uses as much as digits as its factorization.

22477993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 43.

The square root of 22477993 is about 4741.0961812644. The cubic root of 22477993 is about 282.2187369513.

The spelling of 22477993 in words is "twenty-two million, four hundred seventy-seven thousand, nine hundred ninety-three".