8343891 has 12 divisors (see below), whose sum is σ = 12499032. Its totient is φ = 5562432.

The previous prime is 8343887. The next prime is 8343899. The reversal of 8343891 is 1983438.

It is not a de Polignac number, because 8343891 - 2² = 8343887 is a prime.

8343891 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8343899) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16926 + ... + 17411.

It is an arithmetic number, because the mean of its divisors is an integer number (1041586).

Almost surely, 2^8343891 is an apocalyptic number.

8343891 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

8343891 is a deficient number, since it is larger than the sum of its proper divisors (4155141).

8343891 is an equidigital number, since it uses as much as digits as its factorization.

8343891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34352 (or 34340 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 8343891 is about 2888.5794086367. The cubic root of 8343891 is about 202.8256488690.

The spelling of 8343891 in words is "eight million, three hundred forty-three thousand, eight hundred ninety-one".