9986406 has 16 divisors (see below), whose sum is σ = 20437824. Its totient is φ = 3251304.

The previous prime is 9986377. The next prime is 9986407. The reversal of 9986406 is 6046899.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9986407) 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, 19096 + ... + 19611.

It is an arithmetic number, because the mean of its divisors is an integer number (1277364).

Almost surely, 2^9986406 is an apocalyptic number.

9986406 is an abundant number, since it is smaller than the sum of its proper divisors (10451418).

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

9986406 is a wasteful number, since it uses less digits than its factorization.

9986406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38755.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 9986406 is about 3160.1275290722. The cubic root of 9986406 is about 215.3458001155.

The spelling of 9986406 in words is "nine million, nine hundred eighty-six thousand, four hundred six".