996982197 has 4 divisors (see below), whose sum is σ = 1329309600. Its totient is φ = 664654796.

The previous prime is 996982169. The next prime is 996982229. The reversal of 996982197 is 791289699.

It is a happy number.

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: 791289699 = 3 ⋅263763233.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-996982197 is a prime.

It is a super-2 number, since 2×996982197² = 1987947002269893618, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 996982197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (996982297) 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, 166163697 + ... + 166163702.

It is an arithmetic number, because the mean of its divisors is an integer number (332327400).

Almost surely, 2^996982197 is an apocalyptic number.

It is an amenable number.

996982197 is a deficient number, since it is larger than the sum of its proper divisors (332327403).

996982197 is a wasteful number, since it uses less digits than its factorization.

996982197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332327402.

The product of its digits is 4408992, while the sum is 60.

The square root of 996982197 is about 31575.0248931018. The cubic root of 996982197 is about 998.9930520628.

The spelling of 996982197 in words is "nine hundred ninety-six million, nine hundred eighty-two thousand, one hundred ninety-seven".