849663523 has 4 divisors (see below), whose sum is σ = 872627440. Its totient is φ = 826699608.

The previous prime is 849663517. The next prime is 849663533. The reversal of 849663523 is 325366948.

It is a happy number.

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 849663523 - 2⁵ = 849663491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (849663533) 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, 11481903 + ... + 11481976.

It is an arithmetic number, because the mean of its divisors is an integer number (218156860).

Almost surely, 2^849663523 is an apocalyptic number.

849663523 is a deficient number, since it is larger than the sum of its proper divisors (22963917).

849663523 is a wasteful number, since it uses less digits than its factorization.

849663523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22963916.

The product of its digits is 933120, while the sum is 46.

The square root of 849663523 is about 29148.9883700961. The cubic root of 849663523 is about 947.1432269736.

The spelling of 849663523 in words is "eight hundred forty-nine million, six hundred sixty-three thousand, five hundred twenty-three".