440000004 has 48 divisors (see below), whose sum is σ = 1057267008. Its totient is φ = 142316928.

The previous prime is 440000003. The next prime is 440000017. The reversal of 440000004 is 400000044.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (440000003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195574 + ... + 197810.

It is an arithmetic number, because the mean of its divisors is an integer number (22026396).

Almost surely, 2^440000004 is an apocalyptic number.

It is an amenable number.

440000004 is an abundant number, since it is smaller than the sum of its proper divisors (617267004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

440000004 is a wasteful number, since it uses less digits than its factorization.

440000004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2724 (or 2722 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 440000004 is about 20976.1770587493. The cubic root of 440000004 is about 760.5904944571.

Adding to 440000004 its reverse (400000044), we get a palindrome (840000048).

The spelling of 440000004 in words is "four hundred forty million, four", and thus it is an aban number.