22137889 has 2 divisors, whose sum is σ = 22137890. Its totient is φ = 22137888.

The previous prime is 22137883. The next prime is 22137931. The reversal of 22137889 is 98873122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22043025 + 94864 = 4695^2 + 308^2 .

It is a cyclic number.

It is not a de Polignac number, because 22137889 - 2³ = 22137881 is a prime.

It is a super-2 number, since 2×22137889² = 980172258752642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22137881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11068944 + 11068945.

It is an arithmetic number, because the mean of its divisors is an integer number (11068945).

Almost surely, 2^22137889 is an apocalyptic number.

It is an amenable number.

22137889 is a deficient number, since it is larger than the sum of its proper divisors (1).

22137889 is an equidigital number, since it uses as much as digits as its factorization.

22137889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 22137889 is about 4705.0918163198. The cubic root of 22137889 is about 280.7881239515.

The spelling of 22137889 in words is "twenty-two million, one hundred thirty-seven thousand, eight hundred eighty-nine".