26463391 has 2 divisors, whose sum is σ = 26463392. Its totient is φ = 26463390.

The previous prime is 26463389. The next prime is 26463401. The reversal of 26463391 is 19336462.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26463391 - 2¹ = 26463389 is a prime.

It is a super-2 number, since 2×26463391² = 1400622126437762, which contains 22 as substring.

Together with 26463389, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66463391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13231695 + 13231696.

It is an arithmetic number, because the mean of its divisors is an integer number (13231696).

Almost surely, 2^26463391 is an apocalyptic number.

26463391 is a deficient number, since it is larger than the sum of its proper divisors (1).

26463391 is an equidigital number, since it uses as much as digits as its factorization.

26463391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 34.

The square root of 26463391 is about 5144.2580611785. The cubic root of 26463391 is about 297.9992455276. Note that the first 3 decimals are identical.

The spelling of 26463391 in words is "twenty-six million, four hundred sixty-three thousand, three hundred ninety-one".