997101447 has 8 divisors (see below), whose sum is σ = 1329901056. Its totient is φ = 664518072.

The previous prime is 997101439. The next prime is 997101449. The reversal of 997101447 is 744101799.

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

It is not a de Polignac number, because 997101447 - 2³ = 997101439 is a prime.

It is a super-2 number, since 2×997101447² = 1988422591218987618, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 997101399 and 997101408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997101449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42973 + ... + 61974.

It is an arithmetic number, because the mean of its divisors is an integer number (166237632).

Almost surely, 2^997101447 is an apocalyptic number.

997101447 is a deficient number, since it is larger than the sum of its proper divisors (332799609).

997101447 is a wasteful number, since it uses less digits than its factorization.

997101447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108117.

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

The square root of 997101447 is about 31576.9131961945. The cubic root of 997101447 is about 999.0328806483.

The spelling of 997101447 in words is "nine hundred ninety-seven million, one hundred one thousand, four hundred forty-seven".