9897921074 has 16 divisors (see below), whose sum is σ = 14912902656. Its totient is φ = 4926981600.

The previous prime is 9897921049. The next prime is 9897921083. The reversal of 9897921074 is 4701297989.

9897921074 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 799814 + ... + 812094.

It is an arithmetic number, because the mean of its divisors is an integer number (932056416).

Almost surely, 2^9897921074 is an apocalyptic number.

9897921074 is a deficient number, since it is larger than the sum of its proper divisors (5014981582).

9897921074 is a wasteful number, since it uses less digits than its factorization.

9897921074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14041.

The product of its (nonzero) digits is 2286144, while the sum is 56.

The square root of 9897921074 is about 99488.2961659310. The cubic root of 9897921074 is about 2147.0788578052.

The spelling of 9897921074 in words is "nine billion, eight hundred ninety-seven million, nine hundred twenty-one thousand, seventy-four".