26420939 has 2 divisors, whose sum is σ = 26420940. Its totient is φ = 26420938.

The previous prime is 26420929. The next prime is 26420969. The reversal of 26420939 is 93902462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26420939 - 2²⁴ = 9643723 is a prime.

It is a Chen prime.

It is equal to p_1649195 and since 26420939 and 1649195 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 26420899 and 26420908.

It is not a weakly prime, because it can be changed into another prime (26420929) 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 as a sum of consecutive naturals, namely, 13210469 + 13210470.

It is an arithmetic number, because the mean of its divisors is an integer number (13210470).

Almost surely, 2^26420939 is an apocalyptic number.

26420939 is a deficient number, since it is larger than the sum of its proper divisors (1).

26420939 is an equidigital number, since it uses as much as digits as its factorization.

26420939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 26420939 is about 5140.1302512680. The cubic root of 26420939 is about 297.8398122606.

The spelling of 26420939 in words is "twenty-six million, four hundred twenty thousand, nine hundred thirty-nine".