8406427986 has 48 divisors (see below), whose sum is σ = 20021478048. Its totient is φ = 2527948800.

The previous prime is 8406427979. The next prime is 8406427993. The reversal of 8406427986 is 6897246048.

It is an interprime number because it is at equal distance from previous prime (8406427979) and next prime (8406427993).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136111 + ... + 187986.

It is an arithmetic number, because the mean of its divisors is an integer number (417114126).

Almost surely, 2^8406427986 is an apocalyptic number.

8406427986 is an abundant number, since it is smaller than the sum of its proper divisors (11615050062).

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

8406427986 is a wasteful number, since it uses less digits than its factorization.

8406427986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324247 (or 324244 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The square root of 8406427986 is about 91686.5747315276. The cubic root of 8406427986 is about 2033.3111037672.

The spelling of 8406427986 in words is "eight billion, four hundred six million, four hundred twenty-seven thousand, nine hundred eighty-six".