40366943 has 4 divisors (see below), whose sum is σ = 40450320. Its totient is φ = 40283568.

The previous prime is 40366939. The next prime is 40366957. The reversal of 40366943 is 34966304.

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 40366943 - 2² = 40366939 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 (40366043) 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, 40958 + ... + 41931.

It is an arithmetic number, because the mean of its divisors is an integer number (10112580).

Almost surely, 2^40366943 is an apocalyptic number.

40366943 is a deficient number, since it is larger than the sum of its proper divisors (83377).

40366943 is an equidigital number, since it uses as much as digits as its factorization.

40366943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83376.

The product of its (nonzero) digits is 46656, while the sum is 35.

The square root of 40366943 is about 6353.4984850868. The cubic root of 40366943 is about 343.0377805483.

The spelling of 40366943 in words is "forty million, three hundred sixty-six thousand, nine hundred forty-three".