26995009 has 2 divisors, whose sum is σ = 26995010. Its totient is φ = 26995008.

The previous prime is 26994983. The next prime is 26995021. The reversal of 26995009 is 90059962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22771984 + 4223025 = 4772^2 + 2055^2 .

It is a cyclic number.

It is not a de Polignac number, because 26995009 - 2⁷ = 26994881 is a prime.

It is not a weakly prime, because it can be changed into another prime (26995909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13497504 + 13497505.

It is an arithmetic number, because the mean of its divisors is an integer number (13497505).

Almost surely, 2^26995009 is an apocalyptic number.

It is an amenable number.

26995009 is a deficient number, since it is larger than the sum of its proper divisors (1).

26995009 is an equidigital number, since it uses as much as digits as its factorization.

26995009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 26995009 is about 5195.6721413115. The cubic root of 26995009 is about 299.9815136757.

The spelling of 26995009 in words is "twenty-six million, nine hundred ninety-five thousand, nine".