849740 has 12 divisors (see below), whose sum is σ = 1784496. Its totient is φ = 339888.

The previous prime is 849733. The next prime is 849743. The reversal of 849740 is 47948.

It is a happy number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 849697 and 849706.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 849740.

It is not an unprimeable number, because it can be changed into a prime (849743) 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, 21224 + ... + 21263.

It is an arithmetic number, because the mean of its divisors is an integer number (148708).

2⁸⁴⁹⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

849740 is an abundant number, since it is smaller than the sum of its proper divisors (934756).

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

849740 is a wasteful number, since it uses less digits than its factorization.

849740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42496 (or 42494 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 849740 is about 921.8134301473. The cubic root of 849740 is about 94.7171643124.

The spelling of 849740 in words is "eight hundred forty-nine thousand, seven hundred forty".