9982157 has 4 divisors (see below), whose sum is σ = 10048416. Its totient is φ = 9915900.

The previous prime is 9982139. The next prime is 9982169. The reversal of 9982157 is 7512899.

9982157 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7512899 = 353 ⋅21283.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9982157 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9982117) 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, 32903 + ... + 33204.

It is an arithmetic number, because the mean of its divisors is an integer number (2512104).

Almost surely, 2^9982157 is an apocalyptic number.

It is an amenable number.

9982157 is a deficient number, since it is larger than the sum of its proper divisors (66259).

9982157 is a wasteful number, since it uses less digits than its factorization.

9982157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66258.

The product of its digits is 45360, while the sum is 41.

The square root of 9982157 is about 3159.4551745515. The cubic root of 9982157 is about 215.3152541211.

The spelling of 9982157 in words is "nine million, nine hundred eighty-two thousand, one hundred fifty-seven".