853416409 has 4 divisors (see below), whose sum is σ = 853490304. Its totient is φ = 853342516.

The previous prime is 853416401. The next prime is 853416419. The reversal of 853416409 is 904614358.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 853416409 - 2³ = 853416401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (853416401) 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, 15457 + ... + 44110.

It is an arithmetic number, because the mean of its divisors is an integer number (213372576).

Almost surely, 2^853416409 is an apocalyptic number.

It is an amenable number.

853416409 is a deficient number, since it is larger than the sum of its proper divisors (73895).

853416409 is a wasteful number, since it uses less digits than its factorization.

853416409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73894.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 853416409 is about 29213.2916495215. The cubic root of 853416409 is about 948.5356605405.

The spelling of 853416409 in words is "eight hundred fifty-three million, four hundred sixteen thousand, four hundred nine".