22476989 has 2 divisors, whose sum is σ = 22476990. Its totient is φ = 22476988.

The previous prime is 22476983. The next prime is 22476991. The reversal of 22476989 is 98967422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18705625 + 3771364 = 4325^2 + 1942^2 .

It is a cyclic number.

It is not a de Polignac number, because 22476989 - 2²⁰ = 21428413 is a prime.

It is a super-2 number, since 2×22476989² = 1010430069012242, which contains 22 as substring.

Together with 22476991, 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 (22476983) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11238494 + 11238495.

It is an arithmetic number, because the mean of its divisors is an integer number (11238495).

Almost surely, 2^22476989 is an apocalyptic number.

It is an amenable number.

22476989 is a deficient number, since it is larger than the sum of its proper divisors (1).

22476989 is an equidigital number, since it uses as much as digits as its factorization.

22476989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 47.

The square root of 22476989 is about 4740.9902973957. The cubic root of 22476989 is about 282.2145350365.

The spelling of 22476989 in words is "twenty-two million, four hundred seventy-six thousand, nine hundred eighty-nine".