9807972 has 12 divisors (see below), whose sum is σ = 22885296. Its totient is φ = 3269320.

The previous prime is 9807953. The next prime is 9807991. The reversal of 9807972 is 2797089.

It is an interprime number because it is at equal distance from previous prime (9807953) and next prime (9807991).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408654 + ... + 408677.

It is an arithmetic number, because the mean of its divisors is an integer number (1907108).

Almost surely, 2^9807972 is an apocalyptic number.

It is an amenable number.

9807972 is an abundant number, since it is smaller than the sum of its proper divisors (13077324).

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

9807972 is a wasteful number, since it uses less digits than its factorization.

9807972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817338 (or 817336 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 42.

The square root of 9807972 is about 3131.7681906552. The cubic root of 9807972 is about 214.0555071898.

The spelling of 9807972 in words is "nine million, eight hundred seven thousand, nine hundred seventy-two".