4002019 has 4 divisors (see below), whose sum is σ = 4573744. Its totient is φ = 3430296.

The previous prime is 4002017. The next prime is 4002041. The reversal of 4002019 is 9102004.

4002019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4002019 - 2¹ = 4002017 is a prime.

It is a super-2 number, since 2×4002019² = 32032312152722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4001993 and 4002011.

It is not an unprimeable number, because it can be changed into a prime (4002013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285852 + ... + 285865.

It is an arithmetic number, because the mean of its divisors is an integer number (1143436).

Almost surely, 2^4002019 is an apocalyptic number.

4002019 is a deficient number, since it is larger than the sum of its proper divisors (571725).

4002019 is an equidigital number, since it uses as much as digits as its factorization.

4002019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571724.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 4002019 is about 2000.5046863229. The cubic root of 4002019 is about 158.7668087272.

The spelling of 4002019 in words is "four million, two thousand, nineteen".