40387563 has 36 divisors (see below), whose sum is σ = 64701000. Its totient is φ = 24190848.

The previous prime is 40387553. The next prime is 40387573. The reversal of 40387563 is 36578304.

It is a happy number.

40387563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40387553) and next prime (40387573).

It is not a de Polignac number, because 40387563 - 2⁴ = 40387547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40387553) 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 35 ways as a sum of consecutive naturals, for example, 80688 + ... + 81186.

It is an arithmetic number, because the mean of its divisors is an integer number (1797250).

Almost surely, 2^40387563 is an apocalyptic number.

40387563 is a deficient number, since it is larger than the sum of its proper divisors (24313437).

40387563 is a wasteful number, since it uses less digits than its factorization.

40387563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 542 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 40387563 is about 6355.1210059290. The cubic root of 40387563 is about 343.0961801070.

The spelling of 40387563 in words is "forty million, three hundred eighty-seven thousand, five hundred sixty-three".