26936989 has 2 divisors, whose sum is σ = 26936990. Its totient is φ = 26936988.

The previous prime is 26936977. The next prime is 26937011. The reversal of 26936989 is 98963962.

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., 20520900 + 6416089 = 4530^2 + 2533^2 .

It is a cyclic number.

It is not a de Polignac number, because 26936989 - 2⁵ = 26936957 is a prime.

It is a super-2 number, since 2×26936989² = 1451202752772242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26936939) 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, 13468494 + 13468495.

It is an arithmetic number, because the mean of its divisors is an integer number (13468495).

Almost surely, 2^26936989 is an apocalyptic number.

It is an amenable number.

26936989 is a deficient number, since it is larger than the sum of its proper divisors (1).

26936989 is an equidigital number, since it uses as much as digits as its factorization.

26936989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1259712, while the sum is 52.

The square root of 26936989 is about 5190.0856447654. The cubic root of 26936989 is about 299.7664441453.

The spelling of 26936989 in words is "twenty-six million, nine hundred thirty-six thousand, nine hundred eighty-nine".