840919345 has 16 divisors (see below), whose sum is σ = 1170476928. Its totient is φ = 568022400.

The previous prime is 840919319. The next prime is 840919363. The reversal of 840919345 is 543919048.

It is a happy number.

840919345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 840919345 - 2⁹ = 840918833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176956 + ... + 181645.

It is an arithmetic number, because the mean of its divisors is an integer number (73154808).

Almost surely, 2^840919345 is an apocalyptic number.

It is an amenable number.

840919345 is a deficient number, since it is larger than the sum of its proper divisors (329557583).

840919345 is a wasteful number, since it uses less digits than its factorization.

840919345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358680.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 840919345 is about 28998.6093632091. The cubic root of 840919345 is about 943.8828918604.

The spelling of 840919345 in words is "eight hundred forty million, nine hundred nineteen thousand, three hundred forty-five".