997286447 has 8 divisors (see below), whose sum is σ = 1000771200. Its totient is φ = 993808984.

The previous prime is 997286429. The next prime is 997286449. The reversal of 997286447 is 744682799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 997286447 - 2¹⁴ = 997270063 is a prime.

It is a super-3 number, since 3×997286447³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 997286392 and 997286401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997286449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425204 + ... + 427542.

It is an arithmetic number, because the mean of its divisors is an integer number (125096400).

Almost surely, 2^997286447 is an apocalyptic number.

997286447 is a deficient number, since it is larger than the sum of its proper divisors (3484753).

997286447 is a wasteful number, since it uses less digits than its factorization.

997286447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3645.

The product of its digits is 6096384, while the sum is 56.

The square root of 997286447 is about 31579.8424156930. The cubic root of 997286447 is about 999.0946629455.

The spelling of 997286447 in words is "nine hundred ninety-seven million, two hundred eighty-six thousand, four hundred forty-seven".