40455857 has 8 divisors (see below), whose sum is σ = 43709736. Its totient is φ = 37222272.

The previous prime is 40455847. The next prime is 40455881. The reversal of 40455857 is 75855404.

40455857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3013696 + 37442161 = 1736^2 + 6119^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40455857 - 2⁸ = 40455601 is a prime.

It is a Duffinian number.

It is a zygodrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 40455857.

It is not an unprimeable number, because it can be changed into a prime (40455817) 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 7 ways as a sum of consecutive naturals, for example, 788 + ... + 9029.

It is an arithmetic number, because the mean of its divisors is an integer number (5463717).

Almost surely, 2^40455857 is an apocalyptic number.

It is an amenable number.

40455857 is a deficient number, since it is larger than the sum of its proper divisors (3253879).

40455857 is a wasteful number, since it uses less digits than its factorization.

40455857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10147.

The product of its (nonzero) digits is 112000, while the sum is 38.

The square root of 40455857 is about 6360.4918834945. The cubic root of 40455857 is about 343.2894592086.

The spelling of 40455857 in words is "forty million, four hundred fifty-five thousand, eight hundred fifty-seven".