849631 has 4 divisors (see below), whose sum is σ = 872632. Its totient is φ = 826632.

The previous prime is 849601. The next prime is 849649. The reversal of 849631 is 136948.

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 849631 - 2⁵ = 849599 is a prime.

It is a super-2 number, since 2×849631² = 1443745672322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 849593 and 849602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849601) 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, 11445 + ... + 11518.

It is an arithmetic number, because the mean of its divisors is an integer number (218158).

2⁸⁴⁹⁶³¹ is an apocalyptic number.

849631 is a deficient number, since it is larger than the sum of its proper divisors (23001).

849631 is a wasteful number, since it uses less digits than its factorization.

849631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23000.

The product of its digits is 5184, while the sum is 31.

The square root of 849631 is about 921.7543056585. The cubic root of 849631 is about 94.7131142059.

The spelling of 849631 in words is "eight hundred forty-nine thousand, six hundred thirty-one".