1004009404 has 6 divisors (see below), whose sum is σ = 1757016464. Its totient is φ = 502004700.

The previous prime is 1004009401. The next prime is 1004009411. The reversal of 1004009404 is 4049004001.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004009401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125501172 + ... + 125501179.

Almost surely, 2^1004009404 is an apocalyptic number.

It is an amenable number.

1004009404 is a deficient number, since it is larger than the sum of its proper divisors (753007060).

1004009404 is a wasteful number, since it uses less digits than its factorization.

1004009404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251002355 (or 251002353 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1004009404 is about 31686.1074289664. The cubic root of 1004009404 is about 1001.3346858212.

The spelling of 1004009404 in words is "one billion, four million, nine thousand, four hundred four".