85429352089 has 3 divisors (see below), whose sum is σ = 85429644373. Its totient is φ = 85429059806.

The previous prime is 85429352077. The next prime is 85429352093. The reversal of 85429352089 is 98025392458.

The square root of 85429352089 is 292283.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 85429352089 - 2²⁵ = 85395797657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85429352009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 146142 + ... + 438424.

Almost surely, 2^85429352089 is an apocalyptic number.

85429352089 is the 292283-rd square number.

85429352089 is the 146142-nd centered octagonal number.

It is an amenable number.

85429352089 is a deficient number, since it is larger than the sum of its proper divisors (292284).

85429352089 is an frugal number, since it uses more digits than its factorization.

85429352089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584566 (or 292283 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 55.

The spelling of 85429352089 in words is "eighty-five billion, four hundred twenty-nine million, three hundred fifty-two thousand, eighty-nine".