26047979 has 4 divisors (see below), whose sum is σ = 26300976. Its totient is φ = 25794984.

The previous prime is 26047943. The next prime is 26047991. The reversal of 26047979 is 97974062.

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 26047979 - 2¹² = 26043883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26047919) 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, 126344 + ... + 126549.

It is an arithmetic number, because the mean of its divisors is an integer number (6575244).

Almost surely, 2^26047979 is an apocalyptic number.

26047979 is a deficient number, since it is larger than the sum of its proper divisors (252997).

26047979 is a wasteful number, since it uses less digits than its factorization.

26047979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252996.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 26047979 is about 5103.7220731541. The cubic root of 26047979 is about 296.4317225553.

The spelling of 26047979 in words is "twenty-six million, forty-seven thousand, nine hundred seventy-nine".