1004404994 has 4 divisors (see below), whose sum is σ = 1506607494. Its totient is φ = 502202496.

The previous prime is 1004404927. The next prime is 1004405021. The reversal of 1004404994 is 4994044001.

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

It can be written as a sum of positive squares in only one way, i.e., 956974225 + 47430769 = 30935^2 + 6887^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251101247 + ... + 251101250.

Almost surely, 2^1004404994 is an apocalyptic number.

1004404994 is a deficient number, since it is larger than the sum of its proper divisors (502202500).

1004404994 is an equidigital number, since it uses as much as digits as its factorization.

1004404994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502202499.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 1004404994 is about 31692.3491398161. The cubic root of 1004404994 is about 1001.4661805972.

Adding to 1004404994 its reverse (4994044001), we get a palindrome (5998448995).

The spelling of 1004404994 in words is "one billion, four million, four hundred four thousand, nine hundred ninety-four".