40056987 has 8 divisors (see below), whose sum is σ = 53440000. Its totient is φ = 26689320.

The previous prime is 40056983. The next prime is 40057013. The reversal of 40056987 is 78965004.

40056987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40056987 - 2² = 40056983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40056983) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5514 + ... + 10512.

It is an arithmetic number, because the mean of its divisors is an integer number (6680000).

Almost surely, 2^40056987 is an apocalyptic number.

40056987 is a deficient number, since it is larger than the sum of its proper divisors (13383013).

40056987 is a wasteful number, since it uses less digits than its factorization.

40056987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7673.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 40056987 is about 6329.0589347864. The cubic root of 40056987 is about 342.1575229343.

The spelling of 40056987 in words is "forty million, fifty-six thousand, nine hundred eighty-seven".