26986969 has 2 divisors, whose sum is σ = 26986970. Its totient is φ = 26986968.

The previous prime is 26986961. The next prime is 26986991. The reversal of 26986969 is 96968962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14348944 + 12638025 = 3788^2 + 3555^2 .

It is a cyclic number.

It is not a de Polignac number, because 26986969 - 2³ = 26986961 is a prime.

It is a super-2 number, since 2×26986969² = 1456592991613922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26986961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13493484 + 13493485.

It is an arithmetic number, because the mean of its divisors is an integer number (13493485).

Almost surely, 2^26986969 is an apocalyptic number.

It is an amenable number.

26986969 is a deficient number, since it is larger than the sum of its proper divisors (1).

26986969 is an equidigital number, since it uses as much as digits as its factorization.

26986969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2519424, while the sum is 55.

The square root of 26986969 is about 5194.8983628171. The cubic root of 26986969 is about 299.9517292706.

The spelling of 26986969 in words is "twenty-six million, nine hundred eighty-six thousand, nine hundred sixty-nine".