403000040 has 32 divisors (see below), whose sum is σ = 912007080. Its totient is φ = 160265472.

The previous prime is 403000033. The next prime is 403000049. The reversal of 403000040 is 40000304.

It can be written as a sum of positive squares in 4 ways, for example, as 400560196 + 2439844 = 20014^2 + 1562^2 .

It is a junction number, because it is equal to n+sod(n) for n = 402999985 and 403000030.

It is not an unprimeable number, because it can be changed into a prime (403000049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22199 + ... + 36038.

Almost surely, 2^403000040 is an apocalyptic number.

403000040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403000040 is an abundant number, since it is smaller than the sum of its proper divisors (509007040).

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

403000040 is a wasteful number, since it uses less digits than its factorization.

403000040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58421 (or 58417 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 403000040 is about 20074.8608961557. The cubic root of 403000040 is about 738.6437539684.

Adding to 403000040 its reverse (40000304), we get a palindrome (443000344).

The spelling of 403000040 in words is "four hundred three million, forty", and thus it is an aban number.