1040040008 has 32 divisors (see below), whose sum is σ = 2359756800. Its totient is φ = 419511552.

The previous prime is 1040040007. The next prime is 1040040037. The reversal of 1040040008 is 8000400401.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (1040040007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545288 + ... + 547191.

It is an arithmetic number, because the mean of its divisors is an integer number (73742400).

Almost surely, 2^1040040008 is an apocalyptic number.

It is an amenable number.

1040040008 is an abundant number, since it is smaller than the sum of its proper divisors (1319716792).

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

1040040008 is a wasteful number, since it uses less digits than its factorization.

1040040008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092509 (or 1092505 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1040040008 is about 32249.6512849364. The cubic root of 1040040008 is about 1013.1723954746.

Adding to 1040040008 its reverse (8000400401), we get a palindrome (9040440409).

The spelling of 1040040008 in words is "one billion, forty million, forty thousand, eight".