8400840484 has 12 divisors (see below), whose sum is σ = 14760044208. Its totient is φ = 4183685000.

The previous prime is 8400840463. The next prime is 8400840541. The reversal of 8400840484 is 4840480048.

It is a super-2 number, since 2×8400840484² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4182682 + ... + 4184689.

It is an arithmetic number, because the mean of its divisors is an integer number (1230003684).

Almost surely, 2^8400840484 is an apocalyptic number.

It is an amenable number.

8400840484 is a deficient number, since it is larger than the sum of its proper divisors (6359203724).

8400840484 is a wasteful number, since it uses less digits than its factorization.

8400840484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8367626 (or 8367624 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 40.

The square root of 8400840484 is about 91656.0990005575. The cubic root of 8400840484 is about 2032.8605101682.

The spelling of 8400840484 in words is "eight billion, four hundred million, eight hundred forty thousand, four hundred eighty-four".