197933869 has 4 divisors (see below), whose sum is σ = 226210144. Its totient is φ = 169657596.

The previous prime is 197933867. The next prime is 197933893. The reversal of 197933869 is 968339791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 197933869 - 2¹ = 197933867 is a prime.

It is a super-2 number, since 2×197933869² = 78355632994618322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197933861) 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, 14138127 + ... + 14138140.

It is an arithmetic number, because the mean of its divisors is an integer number (56552536).

Almost surely, 2^197933869 is an apocalyptic number.

It is an amenable number.

197933869 is a deficient number, since it is larger than the sum of its proper divisors (28276275).

197933869 is an equidigital number, since it uses as much as digits as its factorization.

197933869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28276274.

The product of its digits is 2204496, while the sum is 55.

The square root of 197933869 is about 14068.8972204647. The cubic root of 197933869 is about 582.7827717070.

The spelling of 197933869 in words is "one hundred ninety-seven million, nine hundred thirty-three thousand, eight hundred sixty-nine".