1003440040 has 32 divisors (see below), whose sum is σ = 2268459360. Its totient is φ = 399470400.

The previous prime is 1003440001. The next prime is 1003440047. The reversal of 1003440040 is 400443001.

It is a junction number, because it is equal to n+sod(n) for n = 1003439996 and 1003440023.

It is not an unprimeable number, because it can be changed into a prime (1003440047) 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, 51006 + ... + 67885.

It is an arithmetic number, because the mean of its divisors is an integer number (70889355).

Almost surely, 2^1003440040 is an apocalyptic number.

1003440040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1003440040 is an abundant number, since it is smaller than the sum of its proper divisors (1265019320).

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

1003440040 is a wasteful number, since it uses less digits than its factorization.

1003440040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119113 (or 119109 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1003440040 is about 31677.1217126809. The cubic root of 1003440040 is about 1001.1453676321.

Adding to 1003440040 its reverse (400443001), we get a palindrome (1403883041).

The spelling of 1003440040 in words is "one billion, three million, four hundred forty thousand, forty".