26129479 has 4 divisors (see below), whose sum is σ = 26444376. Its totient is φ = 25814584.

The previous prime is 26129473. The next prime is 26129483. The reversal of 26129479 is 97492162.

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 26129479 - 2¹³ = 26121287 is a prime.

It is a super-2 number, since 2×26129479² = 1365499345622882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26129473) 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 3 ways as a sum of consecutive naturals, for example, 157324 + ... + 157489.

It is an arithmetic number, because the mean of its divisors is an integer number (6611094).

Almost surely, 2^26129479 is an apocalyptic number.

26129479 is a deficient number, since it is larger than the sum of its proper divisors (314897).

26129479 is an equidigital number, since it uses as much as digits as its factorization.

26129479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314896.

The product of its digits is 54432, while the sum is 40.

The square root of 26129479 is about 5111.7002063893. The cubic root of 26129479 is about 296.7405633082.

The spelling of 26129479 in words is "twenty-six million, one hundred twenty-nine thousand, four hundred seventy-nine".