197993497 has 8 divisors (see below), whose sum is σ = 220102400. Its totient is φ = 176867280.

The previous prime is 197993491. The next prime is 197993503. The reversal of 197993497 is 794399791.

It is an interprime number because it is at equal distance from previous prime (197993491) and next prime (197993503).

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 197993497 - 2²³ = 189604889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197993491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245247 + ... + 246052.

It is an arithmetic number, because the mean of its divisors is an integer number (27512800).

Almost surely, 2^197993497 is an apocalyptic number.

It is an amenable number.

197993497 is a deficient number, since it is larger than the sum of its proper divisors (22108903).

197993497 is a wasteful number, since it uses less digits than its factorization.

197993497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491343.

The product of its digits is 3857868, while the sum is 58.

The square root of 197993497 is about 14071.0162035299. The cubic root of 197993497 is about 582.8412873489.

The spelling of 197993497 in words is "one hundred ninety-seven million, nine hundred ninety-three thousand, four hundred ninety-seven".