8430400064 has 28 divisors (see below), whose sum is σ = 16839883008. Its totient is φ = 4187280000.

The previous prime is 8430400049. The next prime is 8430400067. The reversal of 8430400064 is 4600040348.

It is not an unprimeable number, because it can be changed into a prime (8430400067) 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, 426512 + ... + 445839.

Almost surely, 2^8430400064 is an apocalyptic number.

It is an amenable number.

8430400064 is a deficient number, since it is larger than the sum of its proper divisors (8409482944).

8430400064 is a wasteful number, since it uses less digits than its factorization.

8430400064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872514 (or 872504 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 8430400064 is about 91817.2100643447. The cubic root of 8430400064 is about 2035.2420243109.

The spelling of 8430400064 in words is "eight billion, four hundred thirty million, four hundred thousand, sixty-four".