40667984 has 40 divisors (see below), whose sum is σ = 90404928. Its totient is φ = 17360640.

The previous prime is 40667971. The next prime is 40667987. The reversal of 40667984 is 48976604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40667987) 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 in 7 ways as a sum of consecutive naturals, for example, 36524 + ... + 37620.

Almost surely, 2^40667984 is an apocalyptic number.

It is an amenable number.

40667984 is an abundant number, since it is smaller than the sum of its proper divisors (49736944).

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

40667984 is a wasteful number, since it uses less digits than its factorization.

40667984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443 (or 1437 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 40667984 is about 6377.1454429078. The cubic root of 40667984 is about 343.8884170278. Note that the first 3 decimals are identical.

The spelling of 40667984 in words is "forty million, six hundred sixty-seven thousand, nine hundred eighty-four".