840488488 has 32 divisors (see below), whose sum is σ = 1805112000. Its totient is φ = 359396352.

The previous prime is 840488477. The next prime is 840488489. The reversal of 840488488 is 884884048.

It is a happy number.

It is a super-2 number, since 2×840488488² = 1412841796921052288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (840488489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8431 + ... + 41857.

It is an arithmetic number, because the mean of its divisors is an integer number (56409750).

Almost surely, 2^840488488 is an apocalyptic number.

It is an amenable number.

840488488 is an abundant number, since it is smaller than the sum of its proper divisors (964623512).

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

840488488 is a wasteful number, since it uses less digits than its factorization.

840488488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33889 (or 33885 counting only the distinct ones).

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

The square root of 840488488 is about 28991.1794861817. The cubic root of 840488488 is about 943.7216603744.

The spelling of 840488488 in words is "eight hundred forty million, four hundred eighty-eight thousand, four hundred eighty-eight".