40609843 has 4 divisors (see below), whose sum is σ = 40647960. Its totient is φ = 40571728.

The previous prime is 40609769. The next prime is 40609867. The reversal of 40609843 is 34890604.

40609843 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40609843 - 2¹⁷ = 40478771 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40609799 and 40609808.

It is not an unprimeable number, because it can be changed into a prime (40609883) 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 3 ways as a sum of consecutive naturals, for example, 17413 + ... + 19606.

It is an arithmetic number, because the mean of its divisors is an integer number (10161990).

Almost surely, 2^40609843 is an apocalyptic number.

40609843 is a deficient number, since it is larger than the sum of its proper divisors (38117).

40609843 is a wasteful number, since it uses less digits than its factorization.

40609843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38116.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 40609843 is about 6372.5852681624. The cubic root of 40609843 is about 343.7244587965.

The spelling of 40609843 in words is "forty million, six hundred nine thousand, eight hundred forty-three".