197452669 has 4 divisors (see below), whose sum is σ = 200689660. Its totient is φ = 194215680.

The previous prime is 197452667. The next prime is 197452699. The reversal of 197452669 is 966254791.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 966254791 = 73 ⋅13236367.

It can be written as a sum of positive squares in 2 ways, for example, as 14175225 + 183277444 = 3765^2 + 13538^2 .

It is a cyclic number.

It is not a de Polignac number, because 197452669 - 2¹ = 197452667 is a prime.

It is a super-2 number, since 2×197452669² = 77975112990447122, 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 (197452667) 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 3 ways as a sum of consecutive naturals, for example, 1618404 + ... + 1618525.

It is an arithmetic number, because the mean of its divisors is an integer number (50172415).

Almost surely, 2^197452669 is an apocalyptic number.

It is an amenable number.

197452669 is a deficient number, since it is larger than the sum of its proper divisors (3236991).

197452669 is an equidigital number, since it uses as much as digits as its factorization.

197452669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236990.

The product of its digits is 816480, while the sum is 49.

The square root of 197452669 is about 14051.7852602436. The cubic root of 197452669 is about 582.3101178265.

The spelling of 197452669 in words is "one hundred ninety-seven million, four hundred fifty-two thousand, six hundred sixty-nine".