438057853 has 4 divisors (see below), whose sum is σ = 463825980. Its totient is φ = 412289728.

The previous prime is 438057833. The next prime is 438057857. The reversal of 438057853 is 358750834.

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

It can be written as a sum of positive squares in 2 ways, for example, as 279625284 + 158432569 = 16722^2 + 12587^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438057853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438057857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12884038 + ... + 12884071.

It is an arithmetic number, because the mean of its divisors is an integer number (115956495).

Almost surely, 2^438057853 is an apocalyptic number.

It is an amenable number.

438057853 is a deficient number, since it is larger than the sum of its proper divisors (25768127).

438057853 is a wasteful number, since it uses less digits than its factorization.

438057853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25768126.

The product of its (nonzero) digits is 403200, while the sum is 43.

The square root of 438057853 is about 20929.8316524524. The cubic root of 438057853 is about 759.4697669285.

The spelling of 438057853 in words is "four hundred thirty-eight million, fifty-seven thousand, eight hundred fifty-three".