198440127 has 24 divisors (see below), whose sum is σ = 297545040. Its totient is φ = 127290240.

The previous prime is 198440111. The next prime is 198440129. The reversal of 198440127 is 721044891.

198440127 is a `hidden beast` number, since 1 + 98 + 440 + 127 = 666.

It is not a de Polignac number, because 198440127 - 2⁴ = 198440111 is a prime.

It is a super-2 number, since 2×198440127² = 78756968007552258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 198440091 and 198440100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198440129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85243 + ... + 87539.

It is an arithmetic number, because the mean of its divisors is an integer number (12397710).

Almost surely, 2^198440127 is an apocalyptic number.

198440127 is a deficient number, since it is larger than the sum of its proper divisors (99104913).

198440127 is a wasteful number, since it uses less digits than its factorization.

198440127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2663 (or 2660 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 198440127 is about 14086.8778300942. The cubic root of 198440127 is about 583.2792123576.

The spelling of 198440127 in words is "one hundred ninety-eight million, four hundred forty thousand, one hundred twenty-seven".