40844209 has 8 divisors (see below), whose sum is σ = 48288960. Its totient is φ = 33801936.

The previous prime is 40844191. The next prime is 40844213. The reversal of 40844209 is 90244804.

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

It is not a de Polignac number, because 40844209 - 2¹¹ = 40842161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40842209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100399 + ... + 100804.

It is an arithmetic number, because the mean of its divisors is an integer number (6036120).

Almost surely, 2^40844209 is an apocalyptic number.

It is an amenable number.

40844209 is a deficient number, since it is larger than the sum of its proper divisors (7444751).

40844209 is a wasteful number, since it uses less digits than its factorization.

40844209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201239.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 40844209 is about 6390.9474258517. The cubic root of 40844209 is about 344.3844207312.

The spelling of 40844209 in words is "forty million, eight hundred forty-four thousand, two hundred nine".