840884488 has 8 divisors (see below), whose sum is σ = 1576658430. Its totient is φ = 420442240.

The previous prime is 840884483. The next prime is 840884497. The reversal of 840884488 is 884488048.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 840884004 + 484 = 28998^2 + 22^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (840884483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52555273 + ... + 52555288.

Almost surely, 2^840884488 is an apocalyptic number.

It is an amenable number.

840884488 is a deficient number, since it is larger than the sum of its proper divisors (735773942).

840884488 is a wasteful number, since it uses less digits than its factorization.

840884488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105110567 (or 105110563 counting only the distinct ones).

The product of its (nonzero) digits is 2097152, while the sum is 52.

The square root of 840884488 is about 28998.0083454019. The cubic root of 840884488 is about 943.8698500307.

The spelling of 840884488 in words is "eight hundred forty million, eight hundred eighty-four thousand, four hundred eighty-eight".