997448347 has 8 divisors (see below), whose sum is σ = 1140988896. Its totient is φ = 854169792.

The previous prime is 997448321. The next prime is 997448351. The reversal of 997448347 is 743844799.

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

It is not a de Polignac number, because 997448347 - 2¹¹ = 997446299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997448357) 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, 57268 + ... + 72625.

It is an arithmetic number, because the mean of its divisors is an integer number (142623612).

Almost surely, 2^997448347 is an apocalyptic number.

997448347 is a deficient number, since it is larger than the sum of its proper divisors (143540549).

997448347 is a wasteful number, since it uses less digits than its factorization.

997448347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130997.

The product of its digits is 6096384, while the sum is 55.

The square root of 997448347 is about 31582.4056556811. The cubic root of 997448347 is about 999.1487245357.

The spelling of 997448347 in words is "nine hundred ninety-seven million, four hundred forty-eight thousand, three hundred forty-seven".