4261945 has 12 divisors (see below), whose sum is σ = 5247396. Its totient is φ = 3323040.

The previous prime is 4261931. The next prime is 4261949. The reversal of 4261945 is 5491624.

It can be written as a sum of positive squares in 2 ways, for example, as 1449616 + 2812329 = 1204^2 + 1677^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4261945 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4261949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9015 + ... + 9475.

It is an arithmetic number, because the mean of its divisors is an integer number (437283).

Almost surely, 2^4261945 is an apocalyptic number.

It is an amenable number.

4261945 is a deficient number, since it is larger than the sum of its proper divisors (985451).

4261945 is an equidigital number, since it uses as much as digits as its factorization.

4261945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 509 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 4261945 is about 2064.4478680751. The cubic root of 4261945 is about 162.1322016934.

The spelling of 4261945 in words is "four million, two hundred sixty-one thousand, nine hundred forty-five".