26402869 has 2 divisors, whose sum is σ = 26402870. Its totient is φ = 26402868.

The previous prime is 26402863. The next prime is 26402899. The reversal of 26402869 is 96820462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26142769 + 260100 = 5113^2 + 510^2 .

It is a cyclic number.

It is not a de Polignac number, because 26402869 - 2¹⁷ = 26271797 is a prime.

It is a super-2 number, since 2×26402869² = 1394222982862322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26402863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13201434 + 13201435.

It is an arithmetic number, because the mean of its divisors is an integer number (13201435).

Almost surely, 2^26402869 is an apocalyptic number.

It is an amenable number.

26402869 is a deficient number, since it is larger than the sum of its proper divisors (1).

26402869 is an equidigital number, since it uses as much as digits as its factorization.

26402869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 26402869 is about 5138.3722130651. The cubic root of 26402869 is about 297.7718965211.

The spelling of 26402869 in words is "twenty-six million, four hundred two thousand, eight hundred sixty-nine".