8400422868 has 12 divisors (see below), whose sum is σ = 19600986720. Its totient is φ = 2800140952.

The previous prime is 8400422867. The next prime is 8400422881. The reversal of 8400422868 is 8682240048.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×8400422868² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8400422867) 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, 350017608 + ... + 350017631.

It is an arithmetic number, because the mean of its divisors is an integer number (1633415560).

Almost surely, 2^8400422868 is an apocalyptic number.

It is an amenable number.

8400422868 is an abundant number, since it is smaller than the sum of its proper divisors (11200563852).

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

8400422868 is a wasteful number, since it uses less digits than its factorization.

8400422868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700035246 (or 700035244 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 42.

The square root of 8400422868 is about 91653.8208041541. The cubic root of 8400422868 is about 2032.8268242871.

The spelling of 8400422868 in words is "eight billion, four hundred million, four hundred twenty-two thousand, eight hundred sixty-eight".