4043090 has 8 divisors (see below), whose sum is σ = 7277580. Its totient is φ = 1617232.

The previous prime is 4043087. The next prime is 4043111. The reversal of 4043090 is 903404.

It can be written as a sum of positive squares in 2 ways, for example, as 3996001 + 47089 = 1999^2 + 217^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202145 + ... + 202164.

Almost surely, 2^4043090 is an apocalyptic number.

4043090 is a deficient number, since it is larger than the sum of its proper divisors (3234490).

4043090 is a wasteful number, since it uses less digits than its factorization.

4043090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404316.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 4043090 is about 2010.7436435309. The cubic root of 4043090 is about 159.3080798119.

Adding to 4043090 its reverse (903404), we get a palindrome (4946494).

The spelling of 4043090 in words is "four million, forty-three thousand, ninety".