26999963 has 2 divisors, whose sum is σ = 26999964. Its totient is φ = 26999962.

The previous prime is 26999939. The next prime is 26999981. The reversal of 26999963 is 36999962.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26999963 - 2¹² = 26995867 is a prime.

It is a super-3 number, since 3×26999963³ (a number of 23 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26999563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13499981 + 13499982.

It is an arithmetic number, because the mean of its divisors is an integer number (13499982).

Almost surely, 2^26999963 is an apocalyptic number.

26999963 is a deficient number, since it is larger than the sum of its proper divisors (1).

26999963 is an equidigital number, since it uses as much as digits as its factorization.

26999963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1417176, while the sum is 53.

The square root of 26999963 is about 5196.1488623788. The cubic root of 26999963 is about 299.9998629629. Note that the first 3 decimals are identical.

Subtracting 26999963 from its reverse (36999962), we obtain a palindrome (9999999).

The spelling of 26999963 in words is "twenty-six million, nine hundred ninety-nine thousand, nine hundred sixty-three".