853198739 has 4 divisors (see below), whose sum is σ = 855730824. Its totient is φ = 850666656.

The previous prime is 853198721. The next prime is 853198741. The reversal of 853198739 is 937891358.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 937891358 = 2 ⋅468945679.

It is a cyclic number.

It is not a de Polignac number, because 853198739 - 2⁸ = 853198483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (853128739) 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, 1265537 + ... + 1266210.

It is an arithmetic number, because the mean of its divisors is an integer number (213932706).

Almost surely, 2^853198739 is an apocalyptic number.

853198739 is a deficient number, since it is larger than the sum of its proper divisors (2532085).

853198739 is a wasteful number, since it uses less digits than its factorization.

853198739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2532084.

The product of its digits is 1632960, while the sum is 53.

The square root of 853198739 is about 29209.5658817450. The cubic root of 853198739 is about 948.4550100666.

The spelling of 853198739 in words is "eight hundred fifty-three million, one hundred ninety-eight thousand, seven hundred thirty-nine".