440642004 has 48 divisors (see below), whose sum is σ = 1170408960. Its totient is φ = 127721440.

The previous prime is 440642003. The next prime is 440642011. The reversal of 440642004 is 400246044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440642003) 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, 69534 + ... + 75605.

It is an arithmetic number, because the mean of its divisors is an integer number (24383520).

Almost surely, 2^440642004 is an apocalyptic number.

440642004 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

440642004 is an abundant number, since it is smaller than the sum of its proper divisors (729766956).

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

440642004 is a wasteful number, since it uses less digits than its factorization.

440642004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145180 (or 145178 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 440642004 is about 20991.4745551617. The cubic root of 440642004 is about 760.9602382407.

Adding to 440642004 its reverse (400246044), we get a palindrome (840888048).

The spelling of 440642004 in words is "four hundred forty million, six hundred forty-two thousand, four".