26229409 has 2 divisors, whose sum is σ = 26229410. Its totient is φ = 26229408.

The previous prime is 26229403. The next prime is 26229421. The reversal of 26229409 is 90492262.

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., 25979409 + 250000 = 5097^2 + 500^2 .

It is a cyclic number.

It is not a de Polignac number, because 26229409 - 2⁵ = 26229377 is a prime.

It is not a weakly prime, because it can be changed into another prime (26229403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13114704 + 13114705.

It is an arithmetic number, because the mean of its divisors is an integer number (13114705).

Almost surely, 2^26229409 is an apocalyptic number.

It is an amenable number.

26229409 is a deficient number, since it is larger than the sum of its proper divisors (1).

26229409 is an equidigital number, since it uses as much as digits as its factorization.

26229409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 26229409 is about 5121.4655129172. The cubic root of 26229409 is about 297.1183685506.

The spelling of 26229409 in words is "twenty-six million, two hundred twenty-nine thousand, four hundred nine".