40193943 has 4 divisors (see below), whose sum is σ = 53591928. Its totient is φ = 26795960.

The previous prime is 40193941. The next prime is 40193947. The reversal of 40193943 is 34939104.

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 40193943 - 2¹ = 40193941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40193941) 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, 6698988 + ... + 6698993.

It is an arithmetic number, because the mean of its divisors is an integer number (13397982).

Almost surely, 2^40193943 is an apocalyptic number.

40193943 is a deficient number, since it is larger than the sum of its proper divisors (13397985).

40193943 is a wasteful number, since it uses less digits than its factorization.

40193943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13397984.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 40193943 is about 6339.8693204198. The cubic root of 40193943 is about 342.5470281917.

The spelling of 40193943 in words is "forty million, one hundred ninety-three thousand, nine hundred forty-three".