4004643 has 4 divisors (see below), whose sum is σ = 5339528. Its totient is φ = 2669760.

The previous prime is 4004629. The next prime is 4004653. The reversal of 4004643 is 3464004.

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

It is not a de Polignac number, because 4004643 - 2⁶ = 4004579 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4004653) 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, 667438 + ... + 667443.

It is an arithmetic number, because the mean of its divisors is an integer number (1334882).

Almost surely, 2^4004643 is an apocalyptic number.

4004643 is a deficient number, since it is larger than the sum of its proper divisors (1334885).

4004643 is a wasteful number, since it uses less digits than its factorization.

4004643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334884.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 4004643 is about 2001.1604133602. The cubic root of 4004643 is about 158.8015006404.

Adding to 4004643 its reverse (3464004), we get a palindrome (7468647).

The spelling of 4004643 in words is "four million, four thousand, six hundred forty-three".