85434899 has 16 divisors (see below), whose sum is σ = 97355520. Its totient is φ = 74259360.

The previous prime is 85434863. The next prime is 85434913. The reversal of 85434899 is 99843458.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85434899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85434829) 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, 32882 + ... + 35384.

It is an arithmetic number, because the mean of its divisors is an integer number (6084720).

Almost surely, 2^85434899 is an apocalyptic number.

85434899 is a deficient number, since it is larger than the sum of its proper divisors (11920621).

85434899 is a wasteful number, since it uses less digits than its factorization.

85434899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650.

The product of its digits is 1244160, while the sum is 50.

The square root of 85434899 is about 9243.1000751912. The cubic root of 85434899 is about 440.4315652059.

It can be divided in two parts, 854 and 34899, that added together give a palindrome (35753).

The spelling of 85434899 in words is "eighty-five million, four hundred thirty-four thousand, eight hundred ninety-nine".