4002819 has 4 divisors (see below), whose sum is σ = 5337096. Its totient is φ = 2668544.

The previous prime is 4002811. The next prime is 4002821. The reversal of 4002819 is 9182004.

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 4002819 - 2³ = 4002811 is a prime.

It is a super-2 number, since 2×4002819² = 32045119893522, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (4002811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 667134 + ... + 667139.

It is an arithmetic number, because the mean of its divisors is an integer number (1334274).

Almost surely, 2^4002819 is an apocalyptic number.

4002819 is a deficient number, since it is larger than the sum of its proper divisors (1334277).

4002819 is a wasteful number, since it uses less digits than its factorization.

4002819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334276.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 4002819 is about 2000.7046258756. The cubic root of 4002819 is about 158.7773871364. Note that the first 3 decimals are identical.

The spelling of 4002819 in words is "four million, two thousand, eight hundred nineteen".