9974798464 has 16 divisors (see below), whose sum is σ = 19871669070. Its totient is φ = 4987399168.

The previous prime is 9974798461. The next prime is 9974798473. The reversal of 9974798464 is 4648974799.

It can be written as a sum of positive squares in only one way, i.e., 5879822400 + 4094976064 = 76680^2 + 63992^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 9974798464.

It is not an unprimeable number, because it can be changed into a prime (9974798461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38963929 + ... + 38964184.

Almost surely, 2^9974798464 is an apocalyptic number.

It is an amenable number.

9974798464 is a deficient number, since it is larger than the sum of its proper divisors (9896870606).

9974798464 is an equidigital number, since it uses as much as digits as its factorization.

9974798464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77928127 (or 77928115 counting only the distinct ones).

The product of its digits is 109734912, while the sum is 67.

The square root of 9974798464 is about 99873.9128301280. The cubic root of 9974798464 is about 2152.6233320986.

The spelling of 9974798464 in words is "nine billion, nine hundred seventy-four million, seven hundred ninety-eight thousand, four hundred sixty-four".