1403443040 has 48 divisors (see below), whose sum is σ = 3336037488. Its totient is φ = 557922816.

The previous prime is 1403443033. The next prime is 1403443061. The reversal of 1403443040 is 403443041.

It is a junction number, because it is equal to n+sod(n) for n = 1403442997 and 1403443015.

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, 827 + ... + 52986.

It is an arithmetic number, because the mean of its divisors is an integer number (69500781).

Almost surely, 2^1403443040 is an apocalyptic number.

1403443040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1403443040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1668018744).

1403443040 is an abundant number, since it is smaller than the sum of its proper divisors (1932594448).

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

1403443040 is a wasteful number, since it uses less digits than its factorization.

1403443040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53991 (or 53983 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1403443040 is about 37462.5551717979. Note that the first 3 decimals coincide. The cubic root of 1403443040 is about 1119.6052605519.

Adding to 1403443040 its reverse (403443041), we get a palindrome (1806886081).

Subtracting from 1403443040 its reverse (403443041), we obtain a palindrome (999999999).

The spelling of 1403443040 in words is "one billion, four hundred three million, four hundred forty-three thousand, forty".