891349 has 2 divisors, whose sum is σ = 891350. Its totient is φ = 891348.

The previous prime is 891329. The next prime is 891377. The reversal of 891349 is 943198.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 651249 + 240100 = 807^2 + 490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-891349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (891329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445674 + 445675.

It is an arithmetic number, because the mean of its divisors is an integer number (445675).

2⁸⁹¹³⁴⁹ is an apocalyptic number.

It is an amenable number.

891349 is a deficient number, since it is larger than the sum of its proper divisors (1).

891349 is an equidigital number, since it uses as much as digits as its factorization.

891349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 34.

The square root of 891349 is about 944.1128110560. The cubic root of 891349 is about 96.2385920026.

The spelling of 891349 in words is "eight hundred ninety-one thousand, three hundred forty-nine".