40718984 has 8 divisors (see below), whose sum is σ = 76348110. Its totient is φ = 20359488.

The previous prime is 40718971. The next prime is 40718989. The reversal of 40718984 is 48981704.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 28622500 + 12096484 = 5350^2 + 3478^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (40718989) by changing a digit.

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 as a sum of consecutive naturals, namely, 2544929 + ... + 2544944.

Almost surely, 2^40718984 is an apocalyptic number.

It is an amenable number.

40718984 is a deficient number, since it is larger than the sum of its proper divisors (35629126).

40718984 is a wasteful number, since it uses less digits than its factorization.

40718984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5089879 (or 5089875 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 40718984 is about 6381.1428443501. The cubic root of 40718984 is about 344.0321089553.

It can be divided in two parts, 407 and 18984, that added together give a palindrome (19391).

The spelling of 40718984 in words is "forty million, seven hundred eighteen thousand, nine hundred eighty-four".