40016940 has 48 divisors (see below), whose sum is σ = 112328160. Its totient is φ = 10644480.

The previous prime is 40016923. The next prime is 40016953. The reversal of 40016940 is 4961004.

It is a self number, because there is not a number n which added to its sum of digits gives 40016940.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 39156 + ... + 40164.

It is an arithmetic number, because the mean of its divisors is an integer number (2340170).

Almost surely, 2^40016940 is an apocalyptic number.

It is an amenable number.

40016940 is an abundant number, since it is smaller than the sum of its proper divisors (72311220).

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

40016940 is a wasteful number, since it uses less digits than its factorization.

40016940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682 (or 1680 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 40016940 is about 6325.8944031655. The cubic root of 40016940 is about 342.0434608425.

Adding to 40016940 its reverse (4961004), we get a palindrome (44977944).

The spelling of 40016940 in words is "forty million, sixteen thousand, nine hundred forty".