1040100440 has 16 divisors (see below), whose sum is σ = 2340226080. Its totient is φ = 416040160.

The previous prime is 1040100427. The next prime is 1040100449. The reversal of 1040100440 is 440010401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040100449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13001216 + ... + 13001295.

It is an arithmetic number, because the mean of its divisors is an integer number (146264130).

Almost surely, 2^1040100440 is an apocalyptic number.

1040100440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040100440 is an abundant number, since it is smaller than the sum of its proper divisors (1300125640).

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

1040100440 is a wasteful number, since it uses less digits than its factorization.

1040100440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26002522 (or 26002518 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1040100440 is about 32250.5882116900. The cubic root of 1040100440 is about 1013.1920187095.

Adding to 1040100440 its reverse (440010401), we get a palindrome (1480110841).

The spelling of 1040100440 in words is "one billion, forty million, one hundred thousand, four hundred forty".