40843309 has 8 divisors (see below), whose sum is σ = 44039072. Its totient is φ = 37655280.

The previous prime is 40843307. The next prime is 40843403. The reversal of 40843309 is 90334804.

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

It is not a de Polignac number, because 40843309 - 2¹ = 40843307 is a prime.

It is a super-3 number, since 3×40843309³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40843307) 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, 13882 + ... + 16564.

It is an arithmetic number, because the mean of its divisors is an integer number (5504884).

Almost surely, 2^40843309 is an apocalyptic number.

It is an amenable number.

40843309 is a deficient number, since it is larger than the sum of its proper divisors (3195763).

40843309 is a wasteful number, since it uses less digits than its factorization.

40843309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3867.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 40843309 is about 6390.8770133684. The cubic root of 40843309 is about 344.3818912151.

The spelling of 40843309 in words is "forty million, eight hundred forty-three thousand, three hundred nine".