840496 has 20 divisors (see below), whose sum is σ = 1644984. Its totient is φ = 416000.

The previous prime is 840491. The next prime is 840523. The reversal of 840496 is 694048.

It is not an unprimeable number, because it can be changed into a prime (840491) by changing a digit.

840496 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1896 + ... + 2296.

2⁸⁴⁰⁴⁹⁶ is an apocalyptic number.

It is an amenable number.

840496 is a deficient number, since it is larger than the sum of its proper divisors (804488).

840496 is a wasteful number, since it uses less digits than its factorization.

840496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540 (or 534 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 840496 is about 916.7856892426. The cubic root of 840496 is about 94.3724471920.

It can be divided in two parts, 8 and 40496, that added together give a palindrome (40504).

The spelling of 840496 in words is "eight hundred forty thousand, four hundred ninety-six".