197979802 has 8 divisors (see below), whose sum is σ = 299853216. Its totient is φ = 98028732.

The previous prime is 197979797. The next prime is 197979827. The reversal of 197979802 is 208979791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 197979802.

It is an unprimeable number.

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, 480328 + ... + 480739.

It is an arithmetic number, because the mean of its divisors is an integer number (37481652).

Almost surely, 2^197979802 is an apocalyptic number.

197979802 is a deficient number, since it is larger than the sum of its proper divisors (101873414).

197979802 is a wasteful number, since it uses less digits than its factorization.

197979802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961172.

The product of its (nonzero) digits is 571536, while the sum is 52.

The square root of 197979802 is about 14070.5295564879. The cubic root of 197979802 is about 582.8278488680.

The spelling of 197979802 in words is "one hundred ninety-seven million, nine hundred seventy-nine thousand, eight hundred two".