840491552 has 24 divisors (see below), whose sum is σ = 1655469900. Its totient is φ = 420054784.

The previous prime is 840491551. The next prime is 840491563. The reversal of 840491552 is 255194048.

It can be written as a sum of positive squares in 2 ways, for example, as 589712656 + 250778896 = 24284^2 + 15836^2 .

It is not an unprimeable number, because it can be changed into a prime (840491551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88574 + ... + 97602.

Almost surely, 2^840491552 is an apocalyptic number.

It is an amenable number.

840491552 is a deficient number, since it is larger than the sum of its proper divisors (814978348).

840491552 is a wasteful number, since it uses less digits than its factorization.

840491552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11948 (or 11940 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 840491552 is about 28991.2323297924. The cubic root of 840491552 is about 943.7228071518.

The spelling of 840491552 in words is "eight hundred forty million, four hundred ninety-one thousand, five hundred fifty-two".