198923926 has 4 divisors (see below), whose sum is σ = 298385892. Its totient is φ = 99461962.

The previous prime is 198923903. The next prime is 198923981. The reversal of 198923926 is 629329891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 629329891 = 1367 ⋅460373.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 198923926.

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 as a sum of consecutive naturals, namely, 49730980 + ... + 49730983.

It is an arithmetic number, because the mean of its divisors is an integer number (74596473).

Almost surely, 2^198923926 is an apocalyptic number.

198923926 is a deficient number, since it is larger than the sum of its proper divisors (99461966).

198923926 is an equidigital number, since it uses as much as digits as its factorization.

198923926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99461965.

The product of its digits is 419904, while the sum is 49.

The square root of 198923926 is about 14104.0393504840. The cubic root of 198923926 is about 583.7528411657.

The spelling of 198923926 in words is "one hundred ninety-eight million, nine hundred twenty-three thousand, nine hundred twenty-six".