196962391 has 4 divisors (see below), whose sum is σ = 208548432. Its totient is φ = 185376352.

The previous prime is 196962377. The next prime is 196962397. The reversal of 196962391 is 193269691.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 196962391 - 2¹⁷ = 196831319 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 (196962397) 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, 5792995 + ... + 5793028.

It is an arithmetic number, because the mean of its divisors is an integer number (52137108).

Almost surely, 2^196962391 is an apocalyptic number.

196962391 is a deficient number, since it is larger than the sum of its proper divisors (11586041).

196962391 is a wasteful number, since it uses less digits than its factorization.

196962391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11586040.

The product of its digits is 157464, while the sum is 46.

The square root of 196962391 is about 14034.3290185174. The cubic root of 196962391 is about 581.8277567235.

The spelling of 196962391 in words is "one hundred ninety-six million, nine hundred sixty-two thousand, three hundred ninety-one".