26199149 has 2 divisors, whose sum is σ = 26199150. Its totient is φ = 26199148.

The previous prime is 26199143. The next prime is 26199161. The reversal of 26199149 is 94199162.

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., 22562500 + 3636649 = 4750^2 + 1907^2 .

It is a cyclic number.

It is not a de Polignac number, because 26199149 - 2²⁴ = 9421933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26199143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13099574 + 13099575.

It is an arithmetic number, because the mean of its divisors is an integer number (13099575).

Almost surely, 2^26199149 is an apocalyptic number.

It is an amenable number.

26199149 is a deficient number, since it is larger than the sum of its proper divisors (1).

26199149 is an equidigital number, since it uses as much as digits as its factorization.

26199149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 41.

The square root of 26199149 is about 5118.5104278491. The cubic root of 26199149 is about 297.0040660449.

The spelling of 26199149 in words is "twenty-six million, one hundred ninety-nine thousand, one hundred forty-nine".