40382815940 has 12 divisors (see below), whose sum is σ = 84803913516. Its totient is φ = 16153126368.

The previous prime is 40382815901. The next prime is 40382815969. The reversal of 40382815940 is 4951828304.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20787295684 + 19595520256 = 144178^2 + 139984^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40382815891 and 40382815900.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1009570379 + ... + 1009570418.

It is an arithmetic number, because the mean of its divisors is an integer number (7066992793).

Almost surely, 2^40382815940 is an apocalyptic number.

It is an amenable number.

40382815940 is an abundant number, since it is smaller than the sum of its proper divisors (44421097576).

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

40382815940 is a wasteful number, since it uses less digits than its factorization.

40382815940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019140806 (or 2019140804 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 40382815940 in words is "forty billion, three hundred eighty-two million, eight hundred fifteen thousand, nine hundred forty".