1004455404 has 120 divisors (see below), whose sum is σ = 2845635408. Its totient is φ = 307722240.

The previous prime is 1004455373. The next prime is 1004455427. The reversal of 1004455404 is 4045544001.

1004455404 is a `hidden beast` number, since 100 + 4 + 4 + 554 + 0 + 4 = 666.

It is a super-3 number, since 3×1004455404³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 234724 + ... + 238964.

Almost surely, 2^1004455404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1004455404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1422817704).

1004455404 is an abundant number, since it is smaller than the sum of its proper divisors (1841180004).

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

1004455404 is a wasteful number, since it uses less digits than its factorization.

1004455404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4317 (or 4306 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 1004455404 is about 31693.1444321954. The cubic root of 1004455404 is about 1001.4829344849.

Adding to 1004455404 its reverse (4045544001), we get a palindrome (5049999405).

The spelling of 1004455404 in words is "one billion, four million, four hundred fifty-five thousand, four hundred four".