40943081 has 4 divisors (see below), whose sum is σ = 43098000. Its totient is φ = 38788164.

The previous prime is 40943069. The next prime is 40943117. The reversal of 40943081 is 18034904.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40943081 is a prime.

It is a super-2 number, since 2×40943081² = 3352671763545122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40943681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1077431 + ... + 1077468.

It is an arithmetic number, because the mean of its divisors is an integer number (10774500).

Almost surely, 2^40943081 is an apocalyptic number.

It is an amenable number.

40943081 is a deficient number, since it is larger than the sum of its proper divisors (2154919).

40943081 is a wasteful number, since it uses less digits than its factorization.

40943081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154918.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 40943081 is about 6398.6780666009. The cubic root of 40943081 is about 344.6620817847.

Adding to 40943081 its reverse (18034904), we get a palindrome (58977985).

The spelling of 40943081 in words is "forty million, nine hundred forty-three thousand, eighty-one".