40004019 has 12 divisors (see below), whose sum is σ = 63036792. Its totient is φ = 24244800.

The previous prime is 40004017. The next prime is 40004023. The reversal of 40004019 is 91040004.

40004019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40004019 - 2¹ = 40004017 is a prime.

It is a super-2 number, since 2×40004019² = 3200643072304722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40003992 and 40004010.

It is not an unprimeable number, because it can be changed into a prime (40004011) 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 11 ways as a sum of consecutive naturals, for example, 201942 + ... + 202139.

It is an arithmetic number, because the mean of its divisors is an integer number (5253066).

Almost surely, 2^40004019 is an apocalyptic number.

40004019 is a deficient number, since it is larger than the sum of its proper divisors (23032773).

40004019 is a wasteful number, since it uses less digits than its factorization.

40004019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404098 (or 404095 counting only the distinct ones).

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

The square root of 40004019 is about 6324.8730422041. The cubic root of 40004019 is about 342.0066429406.

The spelling of 40004019 in words is "forty million, four thousand, nineteen".