8430949640 has 64 divisors (see below), whose sum is σ = 19184256000. Its totient is φ = 3334332672.

The previous prime is 8430949607. The next prime is 8430949643. The reversal of 8430949640 is 469490348.

It is a happy number.

It is a super-2 number, since 2×8430949640² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8430949643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3513161 + ... + 3515559.

It is an arithmetic number, because the mean of its divisors is an integer number (299754000).

Almost surely, 2^8430949640 is an apocalyptic number.

It is an amenable number.

8430949640 is an abundant number, since it is smaller than the sum of its proper divisors (10753306360).

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

8430949640 is a wasteful number, since it uses less digits than its factorization.

8430949640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3366 (or 3362 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 47.

The square root of 8430949640 is about 91820.2027878397. The cubic root of 8430949640 is about 2035.2862490159.

The spelling of 8430949640 in words is "eight billion, four hundred thirty million, nine hundred forty-nine thousand, six hundred forty".