40559616 has 132 divisors (see below), whose sum is σ = 122197712. Its totient is φ = 13436928.

The previous prime is 40559611. The next prime is 40559633. The reversal of 40559616 is 61695504.

40559616 is a `hidden beast` number, since 40 + 559 + 61 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (40559611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 248751 + ... + 248913.

Almost surely, 2^40559616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40559616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61098856).

40559616 is an abundant number, since it is smaller than the sum of its proper divisors (81638096).

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

40559616 is an equidigital number, since it uses as much as digits as its factorization.

40559616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 40559616 is about 6368.6431835988. The cubic root of 40559616 is about 343.5826920918.

The spelling of 40559616 in words is "forty million, five hundred fifty-nine thousand, six hundred sixteen".