198407 has 8 divisors (see below), whose sum is σ = 229392. Its totient is φ = 169600.

The previous prime is 198397. The next prime is 198409. The reversal of 198407 is 704891.

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

It is a cyclic number.

It is not a de Polignac number, because 198407 - 2⁴ = 198391 is a prime.

It is a Duffinian number.

198407 is a modest number, since divided by 407 gives 198 as remainder.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 198407.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 198407.

It is not an unprimeable number, because it can be changed into a prime (198409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344 + ... + 717.

It is an arithmetic number, because the mean of its divisors is an integer number (28674).

2¹⁹⁸⁴⁰⁷ is an apocalyptic number.

198407 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

198407 is a deficient number, since it is larger than the sum of its proper divisors (30985).

198407 is a wasteful number, since it uses less digits than its factorization.

198407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 198407 is about 445.4290066891. The cubic root of 198407 is about 58.3246753590.

The spelling of 198407 in words is "one hundred ninety-eight thousand, four hundred seven".