26007979 has 4 divisors (see below), whose sum is σ = 27376840. Its totient is φ = 24639120.

The previous prime is 26007973. The next prime is 26008007. The reversal of 26007979 is 97970062.

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 26007979 - 2⁷ = 26007851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26007973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 684402 + ... + 684439.

It is an arithmetic number, because the mean of its divisors is an integer number (6844210).

Almost surely, 2^26007979 is an apocalyptic number.

26007979 is a deficient number, since it is larger than the sum of its proper divisors (1368861).

26007979 is a wasteful number, since it uses less digits than its factorization.

26007979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368860.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 26007979 is about 5099.8018588961. The cubic root of 26007979 is about 296.2799085568.

The spelling of 26007979 in words is "twenty-six million, seven thousand, nine hundred seventy-nine".