4307945 has 4 divisors (see below), whose sum is σ = 5169540. Its totient is φ = 3446352.

The previous prime is 4307939. The next prime is 4307957. The reversal of 4307945 is 5497034.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2679769 + 1628176 = 1637^2 + 1276^2 .

It is a cyclic number.

It is not a de Polignac number, because 4307945 - 2¹⁰ = 4306921 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 430790 + ... + 430799.

It is an arithmetic number, because the mean of its divisors is an integer number (1292385).

Almost surely, 2^4307945 is an apocalyptic number.

It is an amenable number.

4307945 is a deficient number, since it is larger than the sum of its proper divisors (861595).

4307945 is an equidigital number, since it uses as much as digits as its factorization.

4307945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861594.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 4307945 is about 2075.5589608585. The cubic root of 4307945 is about 162.7134237136.

The spelling of 4307945 in words is "four million, three hundred seven thousand, nine hundred forty-five".