26440401 has 8 divisors (see below), whose sum is σ = 37965760. Its totient is φ = 16270992.

The previous prime is 26440391. The next prime is 26440429. The reversal of 26440401 is 10404462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26440401 - 2⁵ = 26440369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26440451) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 338941 + ... + 339018.

It is an arithmetic number, because the mean of its divisors is an integer number (4745720).

Almost surely, 2^26440401 is an apocalyptic number.

It is an amenable number.

26440401 is a deficient number, since it is larger than the sum of its proper divisors (11525359).

26440401 is a wasteful number, since it uses less digits than its factorization.

26440401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677975.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 26440401 is about 5142.0230454559. The cubic root of 26440401 is about 297.9129251773.

Adding to 26440401 its reverse (10404462), we get a palindrome (36844863).

The spelling of 26440401 in words is "twenty-six million, four hundred forty thousand, four hundred one".