40564589 has 8 divisors (see below), whose sum is σ = 43734432. Its totient is φ = 37401840.

The previous prime is 40564583. The next prime is 40564597. The reversal of 40564589 is 98546504.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40564589 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40564583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21494 + ... + 23304.

It is an arithmetic number, because the mean of its divisors is an integer number (5466804).

Almost surely, 2^40564589 is an apocalyptic number.

It is an amenable number.

40564589 is a deficient number, since it is larger than the sum of its proper divisors (3169843).

40564589 is a wasteful number, since it uses less digits than its factorization.

40564589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3547.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 40564589 is about 6369.0336001626. The cubic root of 40564589 is about 343.5967337015.

The spelling of 40564589 in words is "forty million, five hundred sixty-four thousand, five hundred eighty-nine".