197199940 has 48 divisors (see below), whose sum is σ = 474106752. Its totient is φ = 67493376.

The previous prime is 197199911. The next prime is 197199943. The reversal of 197199940 is 49991791.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (197199943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126204 + ... + 127756.

It is an arithmetic number, because the mean of its divisors is an integer number (9877224).

Almost surely, 2^197199940 is an apocalyptic number.

197199940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197199940 is an abundant number, since it is smaller than the sum of its proper divisors (276906812).

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

197199940 is a wasteful number, since it uses less digits than its factorization.

197199940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2476 (or 2474 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 49.

The square root of 197199940 is about 14042.7896089061. The cubic root of 197199940 is about 582.0615696762.

The spelling of 197199940 in words is "one hundred ninety-seven million, one hundred ninety-nine thousand, nine hundred forty".