26616949 has 4 divisors (see below), whose sum is σ = 27336364. Its totient is φ = 25897536.

The previous prime is 26616937. The next prime is 26616959. The reversal of 26616949 is 94961662.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22496049 + 4120900 = 4743^2 + 2030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26616949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26616959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359652 + ... + 359725.

It is an arithmetic number, because the mean of its divisors is an integer number (6834091).

Almost surely, 2^26616949 is an apocalyptic number.

It is an amenable number.

26616949 is a deficient number, since it is larger than the sum of its proper divisors (719415).

26616949 is an equidigital number, since it uses as much as digits as its factorization.

26616949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719414.

The product of its digits is 139968, while the sum is 43.

The square root of 26616949 is about 5159.1616567035. The cubic root of 26616949 is about 298.5745301057.

The spelling of 26616949 in words is "twenty-six million, six hundred sixteen thousand, nine hundred forty-nine".