40317984 has 108 divisors (see below), whose sum is σ = 133420014. Its totient is φ = 11515392.

The previous prime is 40317971. The next prime is 40318007. The reversal of 40317984 is 48971304.

It is a happy number.

40317984 is a `hidden beast` number, since 403 + 179 + 84 = 666.

It can be written as a sum of positive squares in only one way, i.e., 31674384 + 8643600 = 5628^2 + 2940^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12684 + ... + 15540.

Almost surely, 2^40317984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40317984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66710007).

40317984 is an abundant number, since it is smaller than the sum of its proper divisors (93102030).

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

40317984 is a wasteful number, since it uses less digits than its factorization.

40317984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887 (or 2869 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 40317984 is about 6349.6443994920. The cubic root of 40317984 is about 342.8990401180.

The spelling of 40317984 in words is "forty million, three hundred seventeen thousand, nine hundred eighty-four".