26622889 has 2 divisors, whose sum is σ = 26622890. Its totient is φ = 26622888.

The previous prime is 26622877. The next prime is 26622931. The reversal of 26622889 is 98822662.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23619600 + 3003289 = 4860^2 + 1733^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26622889 is a prime.

It is not a weakly prime, because it can be changed into another prime (26622839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13311444 + 13311445.

It is an arithmetic number, because the mean of its divisors is an integer number (13311445).

Almost surely, 2^26622889 is an apocalyptic number.

It is an amenable number.

26622889 is a deficient number, since it is larger than the sum of its proper divisors (1).

26622889 is an equidigital number, since it uses as much as digits as its factorization.

26622889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 43.

The square root of 26622889 is about 5159.7372995144. The cubic root of 26622889 is about 298.5967390222.

The spelling of 26622889 in words is "twenty-six million, six hundred twenty-two thousand, eight hundred eighty-nine".