26880979 has 2 divisors, whose sum is σ = 26880980. Its totient is φ = 26880978.

The previous prime is 26880949. The next prime is 26880983. The reversal of 26880979 is 97908862.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26880979 is a prime.

It is not a weakly prime, because it can be changed into another prime (26880929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13440489 + 13440490.

It is an arithmetic number, because the mean of its divisors is an integer number (13440490).

Almost surely, 2^26880979 is an apocalyptic number.

26880979 is a deficient number, since it is larger than the sum of its proper divisors (1).

26880979 is an equidigital number, since it uses as much as digits as its factorization.

26880979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 26880979 is about 5184.6869722289. The cubic root of 26880979 is about 299.5585321539.

The spelling of 26880979 in words is "twenty-six million, eight hundred eighty thousand, nine hundred seventy-nine".