40443943 has 8 divisors (see below), whose sum is σ = 41384736. Its totient is φ = 39521440.

The previous prime is 40443937. The next prime is 40444007. The reversal of 40443943 is 34934404.

It is not a de Polignac number, because 40443943 - 2⁵ = 40443911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40443643) 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, 357855 + ... + 357967.

It is an arithmetic number, because the mean of its divisors is an integer number (5173092).

Almost surely, 2^40443943 is an apocalyptic number.

40443943 is a deficient number, since it is larger than the sum of its proper divisors (940793).

40443943 is an frugal number, since it uses more digits than its factorization.

40443943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 40443943 is about 6359.5552517452. Note that the first 3 decimals coincide. The cubic root of 40443943 is about 343.2557570249.

The spelling of 40443943 in words is "forty million, four hundred forty-three thousand, nine hundred forty-three".