197998927 has 8 divisors (see below), whose sum is σ = 236123136. Its totient is φ = 162334392.

The previous prime is 197998919. The next prime is 197998991. The reversal of 197998927 is 729899791.

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

It is a cyclic number.

It is not a de Polignac number, because 197998927 - 2³ = 197998919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197998027) by changing a digit.

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, 614743 + ... + 615064.

It is an arithmetic number, because the mean of its divisors is an integer number (29515392).

Almost surely, 2^197998927 is an apocalyptic number.

197998927 is a deficient number, since it is larger than the sum of its proper divisors (38124209).

197998927 is a wasteful number, since it uses less digits than its factorization.

197998927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229837.

The product of its digits is 5143824, while the sum is 61.

The square root of 197998927 is about 14071.2091520239. The cubic root of 197998927 is about 582.8466154688.

The spelling of 197998927 in words is "one hundred ninety-seven million, nine hundred ninety-eight thousand, nine hundred twenty-seven".