40289976 has 24 divisors (see below), whose sum is σ = 109118880. Its totient is φ = 13429968.

The previous prime is 40289957. The next prime is 40289989. The reversal of 40289976 is 67998204.

It is a happy number.

40289976 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 279720 + ... + 279863.

It is an arithmetic number, because the mean of its divisors is an integer number (4546620).

Almost surely, 2^40289976 is an apocalyptic number.

It is an amenable number.

40289976 is an abundant number, since it is smaller than the sum of its proper divisors (68828904).

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

40289976 is a wasteful number, since it uses less digits than its factorization.

40289976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559595 (or 559588 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 40289976 is about 6347.4385384972. The cubic root of 40289976 is about 342.8196202984.

The spelling of 40289976 in words is "forty million, two hundred eighty-nine thousand, nine hundred seventy-six".