26144369 has 2 divisors, whose sum is σ = 26144370. Its totient is φ = 26144368.

The previous prime is 26144333. The next prime is 26144381. The reversal of 26144369 is 96344162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26142769 + 1600 = 5113^2 + 40^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26144369 is a prime.

It is a super-2 number, since 2×26144369² = 1367056060816322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_1632986 and since 26144369 and 1632986 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (26144309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13072184 + 13072185.

It is an arithmetic number, because the mean of its divisors is an integer number (13072185).

Almost surely, 2^26144369 is an apocalyptic number.

It is an amenable number.

26144369 is a deficient number, since it is larger than the sum of its proper divisors (1).

26144369 is an equidigital number, since it uses as much as digits as its factorization.

26144369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 35.

The square root of 26144369 is about 5113.1564615216. The cubic root of 26144369 is about 296.7969189154.

The spelling of 26144369 in words is "twenty-six million, one hundred forty-four thousand, three hundred sixty-nine".