26479399 has 4 divisors (see below), whose sum is σ = 27125280. Its totient is φ = 25833520.

The previous prime is 26479381. The next prime is 26479441. The reversal of 26479399 is 99397462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99397462 = 2 ⋅49698731.

It is a cyclic number.

It is not a de Polignac number, because 26479399 - 2¹¹ = 26477351 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 (26479339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322879 + ... + 322960.

It is an arithmetic number, because the mean of its divisors is an integer number (6781320).

Almost surely, 2^26479399 is an apocalyptic number.

26479399 is a deficient number, since it is larger than the sum of its proper divisors (645881).

26479399 is an equidigital number, since it uses as much as digits as its factorization.

26479399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645880.

The product of its digits is 734832, while the sum is 49.

The square root of 26479399 is about 5145.8137354553. The cubic root of 26479399 is about 298.0593211034.

The spelling of 26479399 in words is "twenty-six million, four hundred seventy-nine thousand, three hundred ninety-nine".