40433791 has 4 divisors (see below), whose sum is σ = 40475584. Its totient is φ = 40392000.

The previous prime is 40433777. The next prime is 40433807. The reversal of 40433791 is 19733404.

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 40433791 - 2⁷ = 40433663 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 (40433741) 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, 19410 + ... + 21391.

It is an arithmetic number, because the mean of its divisors is an integer number (10118896).

Almost surely, 2^40433791 is an apocalyptic number.

40433791 is a deficient number, since it is larger than the sum of its proper divisors (41793).

40433791 is an equidigital number, since it uses as much as digits as its factorization.

40433791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41792.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 40433791 is about 6358.7570326283. The cubic root of 40433791 is about 343.2270339431.

The spelling of 40433791 in words is "forty million, four hundred thirty-three thousand, seven hundred ninety-one".