1010003440 has 20 divisors (see below), whose sum is σ = 2348258184. Its totient is φ = 404001344.

The previous prime is 1010003429. The next prime is 1010003447. The reversal of 1010003440 is 443000101.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 1010003440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010003447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6312442 + ... + 6312601.

Almost surely, 2^1010003440 is an apocalyptic number.

1010003440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1010003440 is an abundant number, since it is smaller than the sum of its proper divisors (1338254744).

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

1010003440 is a wasteful number, since it uses less digits than its factorization.

1010003440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12625056 (or 12625050 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1010003440 is about 31780.5512853380. The cubic root of 1010003440 is about 1003.3234226262.

Adding to 1010003440 its reverse (443000101), we get a palindrome (1453003541).

The spelling of 1010003440 in words is "one billion, ten million, three thousand, four hundred forty".