9981372 has 12 divisors (see below), whose sum is σ = 23289896. Its totient is φ = 3327120.

The previous prime is 9981371. The next prime is 9981373. The reversal of 9981372 is 2731899.

9981372 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9981371) and next prime (9981373).

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

It is a self number, because there is not a number n which added to its sum of digits gives 9981372.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9981371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415879 + ... + 415902.

Almost surely, 2^9981372 is an apocalyptic number.

It is an amenable number.

9981372 is an abundant number, since it is smaller than the sum of its proper divisors (13308524).

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

9981372 is a wasteful number, since it uses less digits than its factorization.

9981372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831788 (or 831786 counting only the distinct ones).

The product of its digits is 27216, while the sum is 39.

The square root of 9981372 is about 3159.3309418293. The cubic root of 9981372 is about 215.3096098198.

The spelling of 9981372 in words is "nine million, nine hundred eighty-one thousand, three hundred seventy-two".