197299988 has 12 divisors (see below), whose sum is σ = 346784340. Its totient is φ = 98218752.

The previous prime is 197299969. The next prime is 197300041. The reversal of 197299988 is 889992791.

It can be written as a sum of positive squares in 2 ways, for example, as 189392644 + 7907344 = 13762^2 + 2812^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 197299988.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106781 + ... + 108612.

It is an arithmetic number, because the mean of its divisors is an integer number (28898695).

Almost surely, 2^197299988 is an apocalyptic number.

It is an amenable number.

197299988 is a deficient number, since it is larger than the sum of its proper divisors (149484352).

197299988 is a wasteful number, since it uses less digits than its factorization.

197299988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215626 (or 215624 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 62.

The square root of 197299988 is about 14046.3514123775. The cubic root of 197299988 is about 582.1599879794.

The spelling of 197299988 in words is "one hundred ninety-seven million, two hundred ninety-nine thousand, nine hundred eighty-eight".