9974217897 has 24 divisors (see below), whose sum is σ = 16493203584. Its totient is φ = 5689920384.

The previous prime is 9974217889. The next prime is 9974217899. The reversal of 9974217897 is 7987124799.

It is not a de Polignac number, because 9974217897 - 2³ = 9974217889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (9974217899) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96133 + ... + 170850.

It is an arithmetic number, because the mean of its divisors is an integer number (687216816).

Almost surely, 2^9974217897 is an apocalyptic number.

It is an amenable number.

9974217897 is a deficient number, since it is larger than the sum of its proper divisors (6518985687).

9974217897 is a wasteful number, since it uses less digits than its factorization.

9974217897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267589 (or 267586 counting only the distinct ones).

The product of its digits is 16003008, while the sum is 63.

The square root of 9974217897 is about 99871.0062881115. The cubic root of 9974217897 is about 2152.5815679693.

The spelling of 9974217897 in words is "nine billion, nine hundred seventy-four million, two hundred seventeen thousand, eight hundred ninety-seven".