197904940 has 12 divisors (see below), whose sum is σ = 415600416. Its totient is φ = 79161968.

The previous prime is 197904919. The next prime is 197904977. The reversal of 197904940 is 49409791.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4947604 + ... + 4947643.

It is an arithmetic number, because the mean of its divisors is an integer number (34633368).

Almost surely, 2^197904940 is an apocalyptic number.

197904940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197904940 is an abundant number, since it is smaller than the sum of its proper divisors (217695476).

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

197904940 is a wasteful number, since it uses less digits than its factorization.

197904940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9895256 (or 9895254 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 197904940 is about 14067.8690639343. The cubic root of 197904940 is about 582.7543781425.

The spelling of 197904940 in words is "one hundred ninety-seven million, nine hundred four thousand, nine hundred forty".