8343945 has 32 divisors (see below), whose sum is σ = 15619200. Its totient is φ = 4214592.

The previous prime is 8343943. The next prime is 8343947. The reversal of 8343945 is 5493438.

It is an interprime number because it is at equal distance from previous prime (8343943) and next prime (8343947).

It is not a de Polignac number, because 8343945 - 2¹ = 8343943 is a prime.

8343945 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8343941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 939 + ... + 4191.

It is an arithmetic number, because the mean of its divisors is an integer number (488100).

Almost surely, 2^8343945 is an apocalyptic number.

It is an amenable number.

8343945 is a deficient number, since it is larger than the sum of its proper divisors (7275255).

8343945 is a wasteful number, since it uses less digits than its factorization.

8343945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3286 (or 3280 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 8343945 is about 2888.5887557768. The cubic root of 8343945 is about 202.8260864171.

The spelling of 8343945 in words is "eight million, three hundred forty-three thousand, nine hundred forty-five".