9980406 has 12 divisors (see below), whose sum is σ = 21624252. Its totient is φ = 3326796.

The previous prime is 9980389. The next prime is 9980431. The reversal of 9980406 is 6040899.

9980406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 277216 + ... + 277251.

It is an arithmetic number, because the mean of its divisors is an integer number (1802021).

Almost surely, 2^9980406 is an apocalyptic number.

9980406 is an abundant number, since it is smaller than the sum of its proper divisors (11643846).

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

9980406 is a wasteful number, since it uses less digits than its factorization.

9980406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554475 (or 554472 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 9980406 is about 3159.1780576599. The cubic root of 9980406 is about 215.3026636874.

The spelling of 9980406 in words is "nine million, nine hundred eighty thousand, four hundred six".