26390963 has 2 divisors, whose sum is σ = 26390964. Its totient is φ = 26390962.

The previous prime is 26390939. The next prime is 26390983. The reversal of 26390963 is 36909362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26390963 - 2¹⁶ = 26325427 is a prime.

It is not a weakly prime, because it can be changed into another prime (26390983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13195481 + 13195482.

It is an arithmetic number, because the mean of its divisors is an integer number (13195482).

Almost surely, 2^26390963 is an apocalyptic number.

26390963 is a deficient number, since it is larger than the sum of its proper divisors (1).

26390963 is an equidigital number, since it uses as much as digits as its factorization.

26390963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 38.

The square root of 26390963 is about 5137.2135443254. The cubic root of 26390963 is about 297.7271311179.

The spelling of 26390963 in words is "twenty-six million, three hundred ninety thousand, nine hundred sixty-three".