26929985 has 4 divisors (see below), whose sum is σ = 32315988. Its totient is φ = 21543984.

The previous prime is 26929963. The next prime is 26929993. The reversal of 26929985 is 58992962.

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 9096256 + 17833729 = 3016^2 + 4223^2 .

It is a cyclic number.

It is not a de Polignac number, because 26929985 - 2⁸ = 26929729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2692994 + ... + 2693003.

It is an arithmetic number, because the mean of its divisors is an integer number (8078997).

Almost surely, 2^26929985 is an apocalyptic number.

It is an amenable number.

26929985 is a deficient number, since it is larger than the sum of its proper divisors (5386003).

26929985 is an equidigital number, since it uses as much as digits as its factorization.

26929985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5386002.

The product of its digits is 699840, while the sum is 50.

The square root of 26929985 is about 5189.4108528811. The cubic root of 26929985 is about 299.7404607145.

The spelling of 26929985 in words is "twenty-six million, nine hundred twenty-nine thousand, nine hundred eighty-five".