40093940 has 24 divisors (see below), whose sum is σ = 86474472. Its totient is φ = 15603840.

The previous prime is 40093927. The next prime is 40093951. The reversal of 40093940 is 4939004.

It is a happy number.

40093940 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 4 ways, for example, as 1430416 + 38663524 = 1196^2 + 6218^2 .

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 7 ways as a sum of consecutive naturals, for example, 26351 + ... + 27830.

It is an arithmetic number, because the mean of its divisors is an integer number (3603103).

Almost surely, 2^40093940 is an apocalyptic number.

It is an amenable number.

40093940 is an abundant number, since it is smaller than the sum of its proper divisors (46380532).

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

40093940 is a wasteful number, since it uses less digits than its factorization.

40093940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54227 (or 54225 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 40093940 is about 6331.9775741864. The cubic root of 40093940 is about 342.2627052582.

The spelling of 40093940 in words is "forty million, ninety-three thousand, nine hundred forty".