8342945 has 16 divisors (see below), whose sum is σ = 11076240. Its totient is φ = 5992704.

The previous prime is 8342941. The next prime is 8342947. The reversal of 8342945 is 5492438.

It can be written as a sum of positive squares in 8 ways, for example, as 966289 + 7376656 = 983^2 + 2716^2 .

It is a cyclic number.

It is not a de Polignac number, because 8342945 - 2² = 8342941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8342941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 671 + ... + 4139.

It is an arithmetic number, because the mean of its divisors is an integer number (692265).

Almost surely, 2^8342945 is an apocalyptic number.

It is an amenable number.

8342945 is a deficient number, since it is larger than the sum of its proper divisors (2733295).

8342945 is a wasteful number, since it uses less digits than its factorization.

8342945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3524.

The product of its digits is 34560, while the sum is 35.

The square root of 8342945 is about 2888.4156556839. The cubic root of 8342945 is about 202.8179833679.

The spelling of 8342945 in words is "eight million, three hundred forty-two thousand, nine hundred forty-five".