40033940 has 12 divisors (see below), whose sum is σ = 84071316. Its totient is φ = 16013568.

The previous prime is 40033933. The next prime is 40033951. The reversal of 40033940 is 4933004.

40033940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 7246864 + 32787076 = 2692^2 + 5726^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000829 + ... + 1000868.

It is an arithmetic number, because the mean of its divisors is an integer number (7005943).

Almost surely, 2^40033940 is an apocalyptic number.

It is an amenable number.

40033940 is an abundant number, since it is smaller than the sum of its proper divisors (44037376).

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

40033940 is a wasteful number, since it uses less digits than its factorization.

40033940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001706 (or 2001704 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 40033940 is about 6327.2379440005. The cubic root of 40033940 is about 342.0918896298.

Adding to 40033940 its reverse (4933004), we get a palindrome (44966944).

The spelling of 40033940 in words is "forty million, thirty-three thousand, nine hundred forty".