26861949 has 12 divisors (see below), whose sum is σ = 40238016. Its totient is φ = 17907804.

The previous prime is 26861909. The next prime is 26861959. The reversal of 26861949 is 94916862.

It is a happy number.

26861949 is a `hidden beast` number, since 26 + 8 + 619 + 4 + 9 = 666.

It is not a de Polignac number, because 26861949 - 2⁸ = 26861693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26861909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55029 + ... + 55514.

It is an arithmetic number, because the mean of its divisors is an integer number (3353168).

Almost surely, 2^26861949 is an apocalyptic number.

It is an amenable number.

26861949 is a deficient number, since it is larger than the sum of its proper divisors (13376067).

26861949 is an equidigital number, since it uses as much as digits as its factorization.

26861949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110558 (or 110546 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 26861949 is about 5182.8514352623. The cubic root of 26861949 is about 299.4878260906.

The spelling of 26861949 in words is "twenty-six million, eight hundred sixty-one thousand, nine hundred forty-nine".