40435559 has 4 divisors (see below), whose sum is σ = 40498704. Its totient is φ = 40372416.

The previous prime is 40435547. The next prime is 40435579. The reversal of 40435559 is 95553404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40435559 - 2¹⁶ = 40370023 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 (40435529) 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 3 ways as a sum of consecutive naturals, for example, 30602 + ... + 31895.

It is an arithmetic number, because the mean of its divisors is an integer number (10124676).

Almost surely, 2^40435559 is an apocalyptic number.

40435559 is a deficient number, since it is larger than the sum of its proper divisors (63145).

40435559 is an equidigital number, since it uses as much as digits as its factorization.

40435559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63144.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 40435559 is about 6358.8960519889. The cubic root of 40435559 is about 343.2320364961.

The spelling of 40435559 in words is "forty million, four hundred thirty-five thousand, five hundred fifty-nine".