85229398399 has 4 divisors (see below), whose sum is σ = 85235223240. Its totient is φ = 85223573560.

The previous prime is 85229398381. The next prime is 85229398403. The reversal of 85229398399 is 99389392258.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85229398399 - 2⁵ = 85229398367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85229398339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2890417 + ... + 2919754.

It is an arithmetic number, because the mean of its divisors is an integer number (21308805810).

Almost surely, 2^85229398399 is an apocalyptic number.

85229398399 is a deficient number, since it is larger than the sum of its proper divisors (5824841).

85229398399 is a wasteful number, since it uses less digits than its factorization.

85229398399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5824840.

The product of its digits is 75582720, while the sum is 67.

The spelling of 85229398399 in words is "eighty-five billion, two hundred twenty-nine million, three hundred ninety-eight thousand, three hundred ninety-nine".