26729897 has 2 divisors, whose sum is σ = 26729898. Its totient is φ = 26729896.

The previous prime is 26729863. The next prime is 26729917. The reversal of 26729897 is 79892762.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26666896 + 63001 = 5164^2 + 251^2 .

It is a cyclic number.

It is not a de Polignac number, because 26729897 - 2⁸ = 26729641 is a prime.

It is not a weakly prime, because it can be changed into another prime (26729837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13364948 + 13364949.

It is an arithmetic number, because the mean of its divisors is an integer number (13364949).

Almost surely, 2^26729897 is an apocalyptic number.

It is an amenable number.

26729897 is a deficient number, since it is larger than the sum of its proper divisors (1).

26729897 is an equidigital number, since it uses as much as digits as its factorization.

26729897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048, while the sum is 50.

The square root of 26729897 is about 5170.0964207643. The cubic root of 26729897 is about 298.9962639772.

The spelling of 26729897 in words is "twenty-six million, seven hundred twenty-nine thousand, eight hundred ninety-seven".