387992196197 has 4 divisors (see below), whose sum is σ = 391551757740. Its totient is φ = 384432634656.

The previous prime is 387992196187. The next prime is 387992196199. The reversal of 387992196197 is 791691299783.

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

It can be written as a sum of positive squares in 2 ways, for example, as 124731874276 + 263260321921 = 353174^2 + 513089^2 .

It is a cyclic number.

It is not a de Polignac number, because 387992196197 - 2⁶ = 387992196133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 387992196197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387992196199) 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, 1779780608 + ... + 1779780825.

It is an arithmetic number, because the mean of its divisors is an integer number (97887939435).

Almost surely, 2^387992196197 is an apocalyptic number.

It is an amenable number.

387992196197 is a deficient number, since it is larger than the sum of its proper divisors (3559561543).

387992196197 is a wasteful number, since it uses less digits than its factorization.

387992196197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3559561542.

The product of its digits is 92588832, while the sum is 71.

The spelling of 387992196197 in words is "three hundred eighty-seven billion, nine hundred ninety-two million, one hundred ninety-six thousand, one hundred ninety-seven".