1001404004 has 6 divisors (see below), whose sum is σ = 1752457014. Its totient is φ = 500702000.

The previous prime is 1001404003. The next prime is 1001404009. The reversal of 1001404004 is 4004041001.

1001404004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 597313600 + 404090404 = 24440^2 + 20102^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1001404004.

It is not an unprimeable number, because it can be changed into a prime (1001404003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125175497 + ... + 125175504.

It is an arithmetic number, because the mean of its divisors is an integer number (292076169).

Almost surely, 2^1001404004 is an apocalyptic number.

It is an amenable number.

1001404004 is a deficient number, since it is larger than the sum of its proper divisors (751053010).

1001404004 is a wasteful number, since it uses less digits than its factorization.

1001404004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250351005 (or 250351003 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1001404004 is about 31644.9680676091. The cubic root of 1001404004 is about 1000.4677824788.

Adding to 1001404004 its reverse (4004041001), we get a palindrome (5005445005).

The spelling of 1001404004 in words is "one billion, one million, four hundred four thousand, four".