840464771 has 8 divisors (see below), whose sum is σ = 857832000. Its totient is φ = 823213440.

The previous prime is 840464761. The next prime is 840464773. The reversal of 840464771 is 177464048.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 840464771 - 2⁶ = 840464707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (840464773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14246 + ... + 43403.

It is an arithmetic number, because the mean of its divisors is an integer number (107229000).

Almost surely, 2^840464771 is an apocalyptic number.

840464771 is a deficient number, since it is larger than the sum of its proper divisors (17367229).

840464771 is a wasteful number, since it uses less digits than its factorization.

840464771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57949.

The product of its (nonzero) digits is 150528, while the sum is 41.

The square root of 840464771 is about 28990.7704450917. The cubic root of 840464771 is about 943.7127836091.

The spelling of 840464771 in words is "eight hundred forty million, four hundred sixty-four thousand, seven hundred seventy-one".