8407986 has 16 divisors (see below), whose sum is σ = 16848000. Its totient is φ = 2797328.

The previous prime is 8407981. The next prime is 8408003. The reversal of 8407986 is 6897048.

It is a happy number.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8407981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3340 + ... + 5288.

It is an arithmetic number, because the mean of its divisors is an integer number (1053000).

Almost surely, 2^8407986 is an apocalyptic number.

8407986 is an abundant number, since it is smaller than the sum of its proper divisors (8440014).

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

8407986 is a wasteful number, since it uses less digits than its factorization.

8407986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2673.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 8407986 is about 2899.6527378291. The cubic root of 8407986 is about 203.3436711278.

The spelling of 8407986 in words is "eight million, four hundred seven thousand, nine hundred eighty-six".