40422857 has 4 divisors (see below), whose sum is σ = 40469520. Its totient is φ = 40376196.

The previous prime is 40422841. The next prime is 40422883. The reversal of 40422857 is 75822404.

40422857 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40422857 - 2⁴ = 40422841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40422457) 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, 22007 + ... + 23772.

It is an arithmetic number, because the mean of its divisors is an integer number (10117380).

Almost surely, 2^40422857 is an apocalyptic number.

It is an amenable number.

40422857 is a deficient number, since it is larger than the sum of its proper divisors (46663).

40422857 is an equidigital number, since it uses as much as digits as its factorization.

40422857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46662.

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 40422857 is about 6357.8972152749. The cubic root of 40422857 is about 343.1960929683.

The spelling of 40422857 in words is "forty million, four hundred twenty-two thousand, eight hundred fifty-seven".