26398199 has 2 divisors, whose sum is σ = 26398200. Its totient is φ = 26398198.

The previous prime is 26398157. The next prime is 26398213. The reversal of 26398199 is 99189362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26398199 - 2¹² = 26394103 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26398129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13199099 + 13199100.

It is an arithmetic number, because the mean of its divisors is an integer number (13199100).

Almost surely, 2^26398199 is an apocalyptic number.

26398199 is a deficient number, since it is larger than the sum of its proper divisors (1).

26398199 is an equidigital number, since it uses as much as digits as its factorization.

26398199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 47.

The square root of 26398199 is about 5137.9177689021. The cubic root of 26398199 is about 297.7543393792.

The spelling of 26398199 in words is "twenty-six million, three hundred ninety-eight thousand, one hundred ninety-nine".