853021443 has 16 divisors (see below), whose sum is σ = 1142942240. Its totient is φ = 565899264.

The previous prime is 853021423. The next prime is 853021453. The reversal of 853021443 is 344120358.

It is not a de Polignac number, because 853021443 - 2¹³ = 853013251 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 853021443.

It is not an unprimeable number, because it can be changed into a prime (853021423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 825255 + ... + 826287.

It is an arithmetic number, because the mean of its divisors is an integer number (71433890).

Almost surely, 2^853021443 is an apocalyptic number.

853021443 is a deficient number, since it is larger than the sum of its proper divisors (289920797).

853021443 is a wasteful number, since it uses less digits than its factorization.

853021443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 853021443 is about 29206.5308278816. The cubic root of 853021443 is about 948.3893087159.

The spelling of 853021443 in words is "eight hundred fifty-three million, twenty-one thousand, four hundred forty-three".