840706998 has 16 divisors (see below), whose sum is σ = 1682924736. Its totient is φ = 279983880.

The previous prime is 840706991. The next prime is 840707029. The reversal of 840706998 is 899607048.

It is a happy number.

840706998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 840706998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840706991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55648 + ... + 69123.

It is an arithmetic number, because the mean of its divisors is an integer number (105182796).

Almost surely, 2^840706998 is an apocalyptic number.

840706998 is an abundant number, since it is smaller than the sum of its proper divisors (842217738).

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

840706998 is a wasteful number, since it uses less digits than its factorization.

840706998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125899.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 840706998 is about 28994.9478012981. The cubic root of 840706998 is about 943.8034361334.

The spelling of 840706998 in words is "eight hundred forty million, seven hundred six thousand, nine hundred ninety-eight".