197983998 has 24 divisors (see below), whose sum is σ = 439429536. Its totient is φ = 64384800.

The previous prime is 197983969. The next prime is 197984027. The reversal of 197983998 is 899389791.

It is an interprime number because it is at equal distance from previous prime (197983969) and next prime (197984027).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133398 + ... + 134873.

It is an arithmetic number, because the mean of its divisors is an integer number (18309564).

Almost surely, 2^197983998 is an apocalyptic number.

197983998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

197983998 is an abundant number, since it is smaller than the sum of its proper divisors (241445538).

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

197983998 is a wasteful number, since it uses less digits than its factorization.

197983998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268320 (or 268317 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 63.

The square root of 197983998 is about 14070.6786616709. The cubic root of 197983998 is about 582.8319663392.

The spelling of 197983998 in words is "one hundred ninety-seven million, nine hundred eighty-three thousand, nine hundred ninety-eight".