4040945 has 8 divisors (see below), whose sum is σ = 4929000. Its totient is φ = 3179520.

The previous prime is 4040941. The next prime is 4040963. The reversal of 4040945 is 5490404.

It can be written as a sum of positive squares in 4 ways, for example, as 44944 + 3996001 = 212^2 + 1999^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4040945 - 2² = 4040941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4040941) 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 7 ways as a sum of consecutive naturals, for example, 6320 + ... + 6929.

It is an arithmetic number, because the mean of its divisors is an integer number (616125).

Almost surely, 2^4040945 is an apocalyptic number.

It is an amenable number.

4040945 is a deficient number, since it is larger than the sum of its proper divisors (888055).

4040945 is a wasteful number, since it uses less digits than its factorization.

4040945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13315.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 4040945 is about 2010.2101880152. The cubic root of 4040945 is about 159.2799020008.

The spelling of 4040945 in words is "four million, forty thousand, nine hundred forty-five".