4004481 has 8 divisors (see below), whose sum is σ = 5750080. Its totient is φ = 2464272.

The previous prime is 4004453. The next prime is 4004489. The reversal of 4004481 is 1844004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4004481 - 2⁵ = 4004449 is a prime.

It is a super-2 number, since 2×4004481² = 32071736158722, which contains 22 as substring.

It is a Duffinian number.

4004481 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4004489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51301 + ... + 51378.

It is an arithmetic number, because the mean of its divisors is an integer number (718760).

Almost surely, 2^4004481 is an apocalyptic number.

It is an amenable number.

4004481 is a deficient number, since it is larger than the sum of its proper divisors (1745599).

4004481 is a wasteful number, since it uses less digits than its factorization.

4004481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102695.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 4004481 is about 2001.1199364356. The cubic root of 4004481 is about 158.7993592768.

Adding to 4004481 its reverse (1844004), we get a palindrome (5848485).

The spelling of 4004481 in words is "four million, four thousand, four hundred eighty-one".