40671943 has 4 divisors (see below), whose sum is σ = 43800568. Its totient is φ = 37543320.

The previous prime is 40671941. The next prime is 40671947. The reversal of 40671943 is 34917604.

It is a happy number.

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 40671943 - 2¹ = 40671941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40671899 and 40671908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40671941) 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, 1564293 + ... + 1564318.

It is an arithmetic number, because the mean of its divisors is an integer number (10950142).

Almost surely, 2^40671943 is an apocalyptic number.

40671943 is a deficient number, since it is larger than the sum of its proper divisors (3128625).

40671943 is a wasteful number, since it uses less digits than its factorization.

40671943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3128624.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 40671943 is about 6377.4558406938. The cubic root of 40671943 is about 343.8995757652.

It can be divided in two parts, 40671 and 943, that added together give a palindrome (41614).

The spelling of 40671943 in words is "forty million, six hundred seventy-one thousand, nine hundred forty-three".