26289449 has 2 divisors, whose sum is σ = 26289450. Its totient is φ = 26289448.

The previous prime is 26289433. The next prime is 26289467. The reversal of 26289449 is 94498262.

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., 23348224 + 2941225 = 4832^2 + 1715^2 .

It is a cyclic number.

It is not a de Polignac number, because 26289449 - 2⁴ = 26289433 is a prime.

It is a super-2 number, since 2×26289449² = 1382270257447202, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26289479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13144724 + 13144725.

It is an arithmetic number, because the mean of its divisors is an integer number (13144725).

Almost surely, 2^26289449 is an apocalyptic number.

It is an amenable number.

26289449 is a deficient number, since it is larger than the sum of its proper divisors (1).

26289449 is an equidigital number, since it uses as much as digits as its factorization.

26289449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 44.

The square root of 26289449 is about 5127.3237658646. The cubic root of 26289449 is about 297.3449004406.

The spelling of 26289449 in words is "twenty-six million, two hundred eighty-nine thousand, four hundred forty-nine".