840116745 has 96 divisors (see below), whose sum is σ = 1688636160. Its totient is φ = 395366400.

The previous prime is 840116729. The next prime is 840116803. The reversal of 840116745 is 547611048.

It is a happy number.

It is not a de Polignac number, because 840116745 - 2⁴ = 840116729 is a prime.

It is a super-2 number, since 2×840116745² = 1411592290458790050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 523945 + ... + 525545.

It is an arithmetic number, because the mean of its divisors is an integer number (17589960).

Almost surely, 2^840116745 is an apocalyptic number.

It is an amenable number.

840116745 is an abundant number, since it is smaller than the sum of its proper divisors (848519415).

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

840116745 is a wasteful number, since it uses less digits than its factorization.

840116745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664 (or 1645 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 840116745 is about 28984.7674649979. The cubic root of 840116745 is about 943.5825057197.

The spelling of 840116745 in words is "eight hundred forty million, one hundred sixteen thousand, seven hundred forty-five".