997305447 has 8 divisors (see below), whose sum is σ = 1375593840. Its totient is φ = 641943680.

The previous prime is 997305427. The next prime is 997305451. The reversal of 997305447 is 744503799.

It is a happy number.

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 997305447 - 2⁷ = 997305319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 997305396 and 997305405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997305427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5731554 + ... + 5731727.

It is an arithmetic number, because the mean of its divisors is an integer number (171949230).

Almost surely, 2^997305447 is an apocalyptic number.

997305447 is a deficient number, since it is larger than the sum of its proper divisors (378288393).

997305447 is a wasteful number, since it uses less digits than its factorization.

997305447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11463313.

The product of its (nonzero) digits is 952560, while the sum is 48.

The square root of 997305447 is about 31580.1432390672. The cubic root of 997305447 is about 999.1010077217.

The spelling of 997305447 in words is "nine hundred ninety-seven million, three hundred five thousand, four hundred forty-seven".