198924387 has 8 divisors (see below), whose sum is σ = 267013200. Its totient is φ = 131725920.

The previous prime is 198924373. The next prime is 198924391. The reversal of 198924387 is 783429891.

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

It is not a de Polignac number, because 198924387 - 2⁴ = 198924371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198924347) 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, 222064 + ... + 222957.

It is an arithmetic number, because the mean of its divisors is an integer number (33376650).

Almost surely, 2^198924387 is an apocalyptic number.

198924387 is a deficient number, since it is larger than the sum of its proper divisors (68088813).

198924387 is a wasteful number, since it uses less digits than its factorization.

198924387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445173.

The product of its digits is 870912, while the sum is 51.

The square root of 198924387 is about 14104.0556933103. The cubic root of 198924387 is about 583.7532921083.

The spelling of 198924387 in words is "one hundred ninety-eight million, nine hundred twenty-four thousand, three hundred eighty-seven".