26999897 has 2 divisors, whose sum is σ = 26999898. Its totient is φ = 26999896.

The previous prime is 26999891. The next prime is 26999939. The reversal of 26999897 is 79899962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18113536 + 8886361 = 4256^2 + 2981^2 .

It is a cyclic number.

It is not a de Polignac number, because 26999897 - 2⁸ = 26999641 is a prime.

It is not a weakly prime, because it can be changed into another prime (26999891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13499948 + 13499949.

It is an arithmetic number, because the mean of its divisors is an integer number (13499949).

Almost surely, 2^26999897 is an apocalyptic number.

It is an amenable number.

26999897 is a deficient number, since it is larger than the sum of its proper divisors (1).

26999897 is an equidigital number, since it uses as much as digits as its factorization.

26999897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4408992, while the sum is 59.

The square root of 26999897 is about 5196.1425115176. The cubic root of 26999897 is about 299.9996185180. Note that the first 3 decimals are identical.

The spelling of 26999897 in words is "twenty-six million, nine hundred ninety-nine thousand, eight hundred ninety-seven".