40043793 has 12 divisors (see below), whose sum is σ = 54669840. Its totient is φ = 26071416.

The previous prime is 40043777. The next prime is 40043797. The reversal of 40043793 is 39734004.

It is not a de Polignac number, because 40043793 - 2⁴ = 40043777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40043793.

It is not an unprimeable number, because it can be changed into a prime (40043797) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1938 + ... + 9156.

It is an arithmetic number, because the mean of its divisors is an integer number (4555820).

Almost surely, 2^40043793 is an apocalyptic number.

40043793 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

40043793 is a deficient number, since it is larger than the sum of its proper divisors (14626047).

40043793 is an equidigital number, since it uses as much as digits as its factorization.

40043793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7308 (or 7265 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 40043793 is about 6328.0165138849. The cubic root of 40043793 is about 342.1199521097.

Adding to 40043793 its reverse (39734004), we get a palindrome (79777797).

The spelling of 40043793 in words is "forty million, forty-three thousand, seven hundred ninety-three".