9774197998 has 8 divisors (see below), whose sum is σ = 14662175760. Its totient is φ = 4886806080.

The previous prime is 9774197959. The next prime is 9774197999. The reversal of 9774197998 is 8997914779.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9774197999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102058 + ... + 173101.

It is an arithmetic number, because the mean of its divisors is an integer number (1832771970).

Almost surely, 2^9774197998 is an apocalyptic number.

9774197998 is a deficient number, since it is larger than the sum of its proper divisors (4887977762).

9774197998 is a wasteful number, since it uses less digits than its factorization.

9774197998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292922.

The product of its digits is 72013536, while the sum is 70.

The square root of 9774197998 is about 98864.5436847811. The cubic root of 9774197998 is about 2138.0952275407.

The spelling of 9774197998 in words is "nine billion, seven hundred seventy-four million, one hundred ninety-seven thousand, nine hundred ninety-eight".