199930998 has 16 divisors (see below), whose sum is σ = 403600320. Its totient is φ = 66020616.

The previous prime is 199930967. The next prime is 199931003. The reversal of 199930998 is 899039991.

It is a super-2 number, since 2×199930998² = 79944807922552008, which contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 155068 + ... + 156351.

It is an arithmetic number, because the mean of its divisors is an integer number (25225020).

Almost surely, 2^199930998 is an apocalyptic number.

199930998 is an abundant number, since it is smaller than the sum of its proper divisors (203669322).

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

199930998 is a wasteful number, since it uses less digits than its factorization.

199930998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311531.

The product of its (nonzero) digits is 1417176, while the sum is 57.

The square root of 199930998 is about 14139.6958241682. The cubic root of 199930998 is about 584.7362855493.

The spelling of 199930998 in words is "one hundred ninety-nine million, nine hundred thirty thousand, nine hundred ninety-eight".