40643475 has 24 divisors (see below), whose sum is σ = 67666800. Its totient is φ = 21525120.

The previous prime is 40643443. The next prime is 40643483. The reversal of 40643475 is 57434604.

It is a happy number.

40643475 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40643475 - 2⁵ = 40643443 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 9357 + ... + 12993.

It is an arithmetic number, because the mean of its divisors is an integer number (2819450).

Almost surely, 2^40643475 is an apocalyptic number.

40643475 is a deficient number, since it is larger than the sum of its proper divisors (27023325).

40643475 is a wasteful number, since it uses less digits than its factorization.

40643475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3799 (or 3794 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 40643475 is about 6375.2235254930. The cubic root of 40643475 is about 343.8193204552.

The spelling of 40643475 in words is "forty million, six hundred forty-three thousand, four hundred seventy-five".