40824857 has 4 divisors (see below), whose sum is σ = 40903440. Its totient is φ = 40746276.

The previous prime is 40824851. The next prime is 40824859. The reversal of 40824857 is 75842804.

40824857 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 40824857 - 2⁸ = 40824601 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40824857.

It is not an unprimeable number, because it can be changed into a prime (40824851) 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, 38507 + ... + 39552.

It is an arithmetic number, because the mean of its divisors is an integer number (10225860).

Almost surely, 2^40824857 is an apocalyptic number.

It is an amenable number.

40824857 is a deficient number, since it is larger than the sum of its proper divisors (78583).

40824857 is an equidigital number, since it uses as much as digits as its factorization.

40824857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78582.

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 40824857 is about 6389.4332299508. The cubic root of 40824857 is about 344.3300223208.

The spelling of 40824857 in words is "forty million, eight hundred twenty-four thousand, eight hundred fifty-seven".