40318940 has 12 divisors (see below), whose sum is σ = 84669816. Its totient is φ = 16127568.

The previous prime is 40318939. The next prime is 40318981. The reversal of 40318940 is 4981304.

It is a congruent number.

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, 1007954 + ... + 1007993.

It is an arithmetic number, because the mean of its divisors is an integer number (7055818).

Almost surely, 2^40318940 is an apocalyptic number.

It is an amenable number.

40318940 is an abundant number, since it is smaller than the sum of its proper divisors (44350876).

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

40318940 is a wasteful number, since it uses less digits than its factorization.

40318940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015956 (or 2015954 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 40318940 is about 6349.7196788520. The cubic root of 40318940 is about 342.9017503138.

The spelling of 40318940 in words is "forty million, three hundred eighteen thousand, nine hundred forty".