198140899 has 16 divisors (see below), whose sum is σ = 229671936. Its totient is φ = 168937600.

The previous prime is 198140897. The next prime is 198140923. The reversal of 198140899 is 998041891.

It is a cyclic number.

It is not a de Polignac number, because 198140899 - 2¹ = 198140897 is a prime.

It is a super-3 number, since 3×198140899³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198140893) 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, 56454 + ... + 59860.

It is an arithmetic number, because the mean of its divisors is an integer number (14354496).

Almost surely, 2^198140899 is an apocalyptic number.

198140899 is a deficient number, since it is larger than the sum of its proper divisors (31531037).

198140899 is a wasteful number, since it uses less digits than its factorization.

198140899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3746.

The product of its (nonzero) digits is 186624, while the sum is 49.

The square root of 198140899 is about 14076.2530170497. The cubic root of 198140899 is about 582.9858891695.

The spelling of 198140899 in words is "one hundred ninety-eight million, one hundred forty thousand, eight hundred ninety-nine".