1040404440 has 32 divisors (see below), whose sum is σ = 3121213680. Its totient is φ = 277441152.

The previous prime is 1040404429. The next prime is 1040404459. The reversal of 1040404440 is 444040401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4334899 + ... + 4335138.

Almost surely, 2^1040404440 is an apocalyptic number.

1040404440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040404440 is an abundant number, since it is smaller than the sum of its proper divisors (2080809240).

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

1040404440 is a wasteful number, since it uses less digits than its factorization.

1040404440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8670051 (or 8670047 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 1040404440 is about 32255.3009596872. The cubic root of 1040404440 is about 1013.2907208343.

Adding to 1040404440 its reverse (444040401), we get a palindrome (1484444841).

The spelling of 1040404440 in words is "one billion, forty million, four hundred four thousand, four hundred forty".