40543766 has 4 divisors (see below), whose sum is σ = 60815652. Its totient is φ = 20271882.

The previous prime is 40543747. The next prime is 40543799. The reversal of 40543766 is 66734504.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×40543766² = 3287593922925512, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10135940 + ... + 10135943.

It is an arithmetic number, because the mean of its divisors is an integer number (15203913).

Almost surely, 2^40543766 is an apocalyptic number.

40543766 is a deficient number, since it is larger than the sum of its proper divisors (20271886).

40543766 is a wasteful number, since it uses less digits than its factorization.

40543766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20271885.

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 40543766 is about 6367.3986839211. The cubic root of 40543766 is about 343.5379308593.

The spelling of 40543766 in words is "forty million, five hundred forty-three thousand, seven hundred sixty-six".