40643467 has 4 divisors (see below), whose sum is σ = 40757040. Its totient is φ = 40529896.

The previous prime is 40643443. The next prime is 40643483. The reversal of 40643467 is 76434604.

40643467 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40643467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40643417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56248 + ... + 56965.

It is an arithmetic number, because the mean of its divisors is an integer number (10189260).

Almost surely, 2^40643467 is an apocalyptic number.

40643467 is a deficient number, since it is larger than the sum of its proper divisors (113573).

40643467 is a wasteful number, since it uses less digits than its factorization.

40643467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113572.

The product of its (nonzero) digits is 48384, while the sum is 34.

The square root of 40643467 is about 6375.2228980640. Note that the first 3 decimals coincide. The cubic root of 40643467 is about 343.8192978968.

The spelling of 40643467 in words is "forty million, six hundred forty-three thousand, four hundred sixty-seven".