840775101 has 16 divisors (see below), whose sum is σ = 1126868544. Its totient is φ = 557608064.

The previous prime is 840775073. The next prime is 840775109. The reversal of 840775101 is 101577048.

It is a cyclic number.

It is not a de Polignac number, because 840775101 - 2¹⁵ = 840742333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840775109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 704161 + ... + 705353.

It is an arithmetic number, because the mean of its divisors is an integer number (70429284).

Almost surely, 2^840775101 is an apocalyptic number.

It is an amenable number.

840775101 is a deficient number, since it is larger than the sum of its proper divisors (286093443).

840775101 is a wasteful number, since it uses less digits than its factorization.

840775101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220.

The product of its (nonzero) digits is 7840, while the sum is 33.

The square root of 840775101 is about 28996.1221717663. The cubic root of 840775101 is about 943.8289202835.

The spelling of 840775101 in words is "eight hundred forty million, seven hundred seventy-five thousand, one hundred one".