26401279 has 8 divisors (see below), whose sum is σ = 28183680. Its totient is φ = 24658200.

The previous prime is 26401267. The next prime is 26401301. The reversal of 26401279 is 97210462.

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

It is not a de Polignac number, because 26401279 - 2⁹ = 26400767 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26401279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26401229) 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 7 ways as a sum of consecutive naturals, for example, 8437 + ... + 11134.

It is an arithmetic number, because the mean of its divisors is an integer number (3522960).

Almost surely, 2^26401279 is an apocalyptic number.

26401279 is a deficient number, since it is larger than the sum of its proper divisors (1782401).

26401279 is a wasteful number, since it uses less digits than its factorization.

26401279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19661.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 26401279 is about 5138.2174924773. The cubic root of 26401279 is about 297.7659190543.

The spelling of 26401279 in words is "twenty-six million, four hundred one thousand, two hundred seventy-nine".