8263945 has 4 divisors (see below), whose sum is σ = 9916740. Its totient is φ = 6611152.

The previous prime is 8263909. The next prime is 8263951. The reversal of 8263945 is 5493628.

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 5067001 + 3196944 = 2251^2 + 1788^2 .

It is a cyclic number.

It is not a de Polignac number, because 8263945 - 2⁹ = 8263433 is a prime.

8263945 is a lucky number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 826390 + ... + 826399.

It is an arithmetic number, because the mean of its divisors is an integer number (2479185).

Almost surely, 2^8263945 is an apocalyptic number.

It is an amenable number.

8263945 is a deficient number, since it is larger than the sum of its proper divisors (1652795).

8263945 is a wasteful number, since it uses less digits than its factorization.

8263945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652794.

The product of its digits is 51840, while the sum is 37.

The square root of 8263945 is about 2874.7078112393. The cubic root of 8263945 is about 202.1757856159.

The spelling of 8263945 in words is "eight million, two hundred sixty-three thousand, nine hundred forty-five".