26842979 has 2 divisors, whose sum is σ = 26842980. Its totient is φ = 26842978.

The previous prime is 26842973. The next prime is 26842997. The reversal of 26842979 is 97924862.

Together with next prime (26842997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26842979 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26842973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13421489 + 13421490.

It is an arithmetic number, because the mean of its divisors is an integer number (13421490).

Almost surely, 2^26842979 is an apocalyptic number.

26842979 is a deficient number, since it is larger than the sum of its proper divisors (1).

26842979 is an equidigital number, since it uses as much as digits as its factorization.

26842979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 47.

The square root of 26842979 is about 5181.0210383669. The cubic root of 26842979 is about 299.4173097136.

The spelling of 26842979 in words is "twenty-six million, eight hundred forty-two thousand, nine hundred seventy-nine".