196243969 has 4 divisors (see below), whose sum is σ = 196452144. Its totient is φ = 196035796.

The previous prime is 196243961. The next prime is 196243987. The reversal of 196243969 is 969342691.

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, and also an emirpimes, since its reverse is a distinct semiprime: 969342691 = 73 ⋅13278667.

It is a cyclic number.

It is not a de Polignac number, because 196243969 - 2³ = 196243961 is a prime.

It is a super-2 number, since 2×196243969² = 77023390737745922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (196243961) 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, 102667 + ... + 104560.

It is an arithmetic number, because the mean of its divisors is an integer number (49113036).

Almost surely, 2^196243969 is an apocalyptic number.

It is an amenable number.

196243969 is a deficient number, since it is larger than the sum of its proper divisors (208175).

196243969 is an equidigital number, since it uses as much as digits as its factorization.

196243969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208174.

The product of its digits is 629856, while the sum is 49.

The square root of 196243969 is about 14008.7104688476. The cubic root of 196243969 is about 581.1194876511.

The spelling of 196243969 in words is "one hundred ninety-six million, two hundred forty-three thousand, nine hundred sixty-nine".