198850739 has 4 divisors (see below), whose sum is σ = 199300056. Its totient is φ = 198401424.

The previous prime is 198850723. The next prime is 198850747. The reversal of 198850739 is 937058891.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 198850739 - 2⁴ = 198850723 is a prime.

It is a super-2 number, since 2×198850739² = 79083232801692242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198855739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223994 + ... + 224879.

It is an arithmetic number, because the mean of its divisors is an integer number (49825014).

Almost surely, 2^198850739 is an apocalyptic number.

198850739 is a deficient number, since it is larger than the sum of its proper divisors (449317).

198850739 is an equidigital number, since it uses as much as digits as its factorization.

198850739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449316.

The product of its (nonzero) digits is 544320, while the sum is 50.

The square root of 198850739 is about 14101.4445713905. Note that the first 3 decimals coincide. The cubic root of 198850739 is about 583.6812420028.

The spelling of 198850739 in words is "one hundred ninety-eight million, eight hundred fifty thousand, seven hundred thirty-nine".