26930399 has 4 divisors (see below), whose sum is σ = 27587280. Its totient is φ = 26273520.

The previous prime is 26930377. The next prime is 26930417. The reversal of 26930399 is 99303962.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 26930399 - 2¹² = 26926303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 656839 = 26930399 / (2 + 6 + 9 + 3 + 0 + 3 + 9 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26930899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328379 + ... + 328460.

It is an arithmetic number, because the mean of its divisors is an integer number (6896820).

Almost surely, 2^26930399 is an apocalyptic number.

26930399 is a deficient number, since it is larger than the sum of its proper divisors (656881).

26930399 is an equidigital number, since it uses as much as digits as its factorization.

26930399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656880.

The product of its (nonzero) digits is 78732, while the sum is 41.

The square root of 26930399 is about 5189.4507416489. The cubic root of 26930399 is about 299.7419966964.

The spelling of 26930399 in words is "twenty-six million, nine hundred thirty thousand, three hundred ninety-nine".