9972906 has 32 divisors (see below), whose sum is σ = 20684160. Its totient is φ = 3203136.

The previous prime is 9972811. The next prime is 9972913. The reversal of 9972906 is 6092799.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36940 + ... + 37208.

It is an arithmetic number, because the mean of its divisors is an integer number (646380).

Almost surely, 2^9972906 is an apocalyptic number.

9972906 is an abundant number, since it is smaller than the sum of its proper divisors (10711254).

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

9972906 is a wasteful number, since it uses less digits than its factorization.

9972906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478.

The product of its (nonzero) digits is 61236, while the sum is 42.

The square root of 9972906 is about 3157.9908169594. The cubic root of 9972906 is about 215.2487188335.

It can be divided in two parts, 9972 and 906, that added together give a triangular number (10878 = T₁₄₇).

The spelling of 9972906 in words is "nine million, nine hundred seventy-two thousand, nine hundred six".