849233364449 has 4 divisors (see below), whose sum is σ = 869946373380. Its totient is φ = 828520355520.

The previous prime is 849233364443. The next prime is 849233364479. The reversal of 849233364449 is 944463332948.

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

It can be written as a sum of positive squares in 2 ways, for example, as 143540961424 + 705692403025 = 378868^2 + 840055^2 .

It is a cyclic number.

It is not a de Polignac number, because 849233364449 - 2²⁰ = 849232315873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (849233364443) 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, 10356504404 + ... + 10356504485.

It is an arithmetic number, because the mean of its divisors is an integer number (217486593345).

Almost surely, 2^849233364449 is an apocalyptic number.

It is an amenable number.

849233364449 is a deficient number, since it is larger than the sum of its proper divisors (20713008931).

849233364449 is a wasteful number, since it uses less digits than its factorization.

849233364449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20713008930.

The product of its digits is 53747712, while the sum is 59.

The spelling of 849233364449 in words is "eight hundred forty-nine billion, two hundred thirty-three million, three hundred sixty-four thousand, four hundred forty-nine".