197020039400 has 24 divisors (see below), whose sum is σ = 458071592070. Its totient is φ = 78808015680.

The previous prime is 197020039399. The next prime is 197020039439. The reversal of 197020039400 is 4930020791.

It can be written as a sum of positive squares in 3 ways, for example, as 128125338916 + 68894700484 = 357946^2 + 262478^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 492549899 + ... + 492550298.

Almost surely, 2^197020039400 is an apocalyptic number.

197020039400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197020039400 is an abundant number, since it is smaller than the sum of its proper divisors (261051552670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197020039400 is a wasteful number, since it uses less digits than its factorization.

197020039400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985100213 (or 985100204 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The spelling of 197020039400 in words is "one hundred ninety-seven billion, twenty million, thirty-nine thousand, four hundred".