840706488 has 48 divisors (see below), whose sum is σ = 2375914320. Its totient is φ = 268050816.

The previous prime is 840706481. The next prime is 840706499. The reversal of 840706488 is 884607048.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840706481) 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 11 ways as a sum of consecutive naturals, for example, 252181 + ... + 255492.

It is an arithmetic number, because the mean of its divisors is an integer number (49498215).

Almost surely, 2^840706488 is an apocalyptic number.

It is an amenable number.

840706488 is an abundant number, since it is smaller than the sum of its proper divisors (1535207832).

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

840706488 is a wasteful number, since it uses less digits than its factorization.

840706488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507708 (or 507701 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The square root of 840706488 is about 28994.9390066611. The cubic root of 840706488 is about 943.8032452862.

The spelling of 840706488 in words is "eight hundred forty million, seven hundred six thousand, four hundred eighty-eight".