40559621 has 8 divisors (see below), whose sum is σ = 41594784. Its totient is φ = 39528720.

The previous prime is 40559611. The next prime is 40559633. The reversal of 40559621 is 12695504.

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-40559621 is a prime.

It is a Duffinian number.

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27710 + ... + 29136.

It is an arithmetic number, because the mean of its divisors is an integer number (5199348).

Almost surely, 2^40559621 is an apocalyptic number.

It is an amenable number.

40559621 is a deficient number, since it is larger than the sum of its proper divisors (1035163).

40559621 is a wasteful number, since it uses less digits than its factorization.

40559621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 40559621 is about 6368.6435761471. The cubic root of 40559621 is about 343.5827062102.

The spelling of 40559621 in words is "forty million, five hundred fifty-nine thousand, six hundred twenty-one".