891334097 has 2 divisors, whose sum is σ = 891334098. Its totient is φ = 891334096.

The previous prime is 891334051. The next prime is 891334117. The reversal of 891334097 is 790433198.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 854743696 + 36590401 = 29236^2 + 6049^2 .

It is a cyclic number.

It is not a de Polignac number, because 891334097 - 2¹² = 891330001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (891334027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445667048 + 445667049.

It is an arithmetic number, because the mean of its divisors is an integer number (445667049).

Almost surely, 2^891334097 is an apocalyptic number.

It is an amenable number.

891334097 is a deficient number, since it is larger than the sum of its proper divisors (1).

891334097 is an equidigital number, since it uses as much as digits as its factorization.

891334097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 891334097 is about 29855.2189240005. The cubic root of 891334097 is about 962.3805564267.

The spelling of 891334097 in words is "eight hundred ninety-one million, three hundred thirty-four thousand, ninety-seven".