891089363 has 2 divisors, whose sum is σ = 891089364. Its totient is φ = 891089362.

The previous prime is 891089321. The next prime is 891089369. The reversal of 891089363 is 363980198.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 891089363 - 2¹⁴ = 891072979 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (891089369) 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, 445544681 + 445544682.

It is an arithmetic number, because the mean of its divisors is an integer number (445544682).

Almost surely, 2^891089363 is an apocalyptic number.

891089363 is a deficient number, since it is larger than the sum of its proper divisors (1).

891089363 is an equidigital number, since it uses as much as digits as its factorization.

891089363 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 891089363 is about 29851.1199622393. The cubic root of 891089363 is about 962.2924679447.

The spelling of 891089363 in words is "eight hundred ninety-one million, eighty-nine thousand, three hundred sixty-three".