891034223 has 2 divisors, whose sum is σ = 891034224. Its totient is φ = 891034222.

The previous prime is 891034219. The next prime is 891034231. The reversal of 891034223 is 322430198.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 891034223 - 2² = 891034219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 891034223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (891034213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445517111 + 445517112.

It is an arithmetic number, because the mean of its divisors is an integer number (445517112).

Almost surely, 2^891034223 is an apocalyptic number.

891034223 is a deficient number, since it is larger than the sum of its proper divisors (1).

891034223 is an equidigital number, since it uses as much as digits as its factorization.

891034223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 891034223 is about 29850.1963645132. The cubic root of 891034223 is about 962.2726188688.

The spelling of 891034223 in words is "eight hundred ninety-one million, thirty-four thousand, two hundred twenty-three".