4040019 has 24 divisors (see below), whose sum is σ = 6308640. Its totient is φ = 2483712.

The previous prime is 4040011. The next prime is 4040021. The reversal of 4040019 is 9100404.

It is not a de Polignac number, because 4040019 - 2³ = 4040011 is a prime.

It is a super-2 number, since 2×4040019² = 32643507040722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4039983 and 4040010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040011) 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 23 ways as a sum of consecutive naturals, for example, 5667 + ... + 6339.

It is an arithmetic number, because the mean of its divisors is an integer number (262860).

Almost surely, 2^4040019 is an apocalyptic number.

4040019 is a deficient number, since it is larger than the sum of its proper divisors (2268621).

4040019 is a wasteful number, since it uses less digits than its factorization.

4040019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731 (or 728 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 4040019 is about 2009.9798506453. The cubic root of 4040019 is about 159.2677345121.

The spelling of 4040019 in words is "four million, forty thousand, nineteen".