849915 has 48 divisors (see below), whose sum is σ = 1718496. Its totient is φ = 384000.

The previous prime is 849883. The next prime is 849917. The reversal of 849915 is 519948.

It is not a de Polignac number, because 849915 - 2⁵ = 849883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 849915.

It is not an unprimeable number, because it can be changed into a prime (849917) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8365 + ... + 8465.

It is an arithmetic number, because the mean of its divisors is an integer number (35802).

2⁸⁴⁹⁹¹⁵ is an apocalyptic number.

849915 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

849915 is an abundant number, since it is smaller than the sum of its proper divisors (868581).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

849915 is a wasteful number, since it uses less digits than its factorization.

849915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 137 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 849915 is about 921.9083468545. The cubic root of 849915 is about 94.7236660525.

It can be divided in two parts, 849 and 915, that added together give a square (1764 = 42²).

The spelling of 849915 in words is "eight hundred forty-nine thousand, nine hundred fifteen".