26488769 has 2 divisors, whose sum is σ = 26488770. Its totient is φ = 26488768.

The previous prime is 26488757. The next prime is 26488799. The reversal of 26488769 is 96788462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26419600 + 69169 = 5140^2 + 263^2 .

It is a cyclic number.

It is not a de Polignac number, because 26488769 - 2⁴ = 26488753 is a prime.

It is a super-2 number, since 2×26488769² = 1403309766270722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (26488739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13244384 + 13244385.

It is an arithmetic number, because the mean of its divisors is an integer number (13244385).

Almost surely, 2^26488769 is an apocalyptic number.

It is an amenable number.

26488769 is a deficient number, since it is larger than the sum of its proper divisors (1).

26488769 is an equidigital number, since it uses as much as digits as its factorization.

26488769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 50.

The square root of 26488769 is about 5146.7241037382. The cubic root of 26488769 is about 298.0944740473.

The spelling of 26488769 in words is "twenty-six million, four hundred eighty-eight thousand, seven hundred sixty-nine".