853393409 has 8 divisors (see below), whose sum is σ = 933661728. Its totient is φ = 773572960.

The previous prime is 853393399. The next prime is 853393447. The reversal of 853393409 is 904393358.

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 853393409 - 2¹⁶ = 853327873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 853393409.

It is not an unprimeable number, because it can be changed into a prime (853393459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107972 + ... + 115605.

It is an arithmetic number, because the mean of its divisors is an integer number (116707716).

Almost surely, 2^853393409 is an apocalyptic number.

It is an amenable number.

853393409 is a deficient number, since it is larger than the sum of its proper divisors (80268319).

853393409 is a wasteful number, since it uses less digits than its factorization.

853393409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223935.

The product of its (nonzero) digits is 349920, while the sum is 44.

The square root of 853393409 is about 29212.8979904425. The cubic root of 853393409 is about 948.5271392934.

The spelling of 853393409 in words is "eight hundred fifty-three million, three hundred ninety-three thousand, four hundred nine".