9009872 has 10 divisors (see below), whose sum is σ = 17456658. Its totient is φ = 4504928.

The previous prime is 9009851. The next prime is 9009893. The reversal of 9009872 is 2789009.

It is an interprime number because it is at equal distance from previous prime (9009851) and next prime (9009893).

It can be written as a sum of positive squares in only one way, i.e., 8976016 + 33856 = 2996^2 + 184^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281543 + ... + 281574.

Almost surely, 2^9009872 is an apocalyptic number.

It is an amenable number.

9009872 is a deficient number, since it is larger than the sum of its proper divisors (8446786).

9009872 is a wasteful number, since it uses less digits than its factorization.

9009872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563125 (or 563119 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 9009872 is about 3001.6448823937. The cubic root of 9009872 is about 208.0844085423.

The spelling of 9009872 in words is "nine million, nine thousand, eight hundred seventy-two".