849690 has 40 divisors (see below), whose sum is σ = 2286900. Its totient is φ = 226368.

The previous prime is 849649. The next prime is 849691. The reversal of 849690 is 96948.

It can be written as a sum of positive squares in 2 ways, for example, as 826281 + 23409 = 909^2 + 153^2 .

It is a super-2 number, since 2×849690² = 1443946192200, which contains 22 as substring.

It is a Curzon number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (849691) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 286 + ... + 1334.

2⁸⁴⁹⁶⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 849690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1143450).

849690 is an abundant number, since it is smaller than the sum of its proper divisors (1437210).

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

849690 is a wasteful number, since it uses less digits than its factorization.

849690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068 (or 1059 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 849690 is about 921.7863092930. The cubic root of 849690 is about 94.7153065084.

The spelling of 849690 in words is "eight hundred forty-nine thousand, six hundred ninety".