199748 has 6 divisors (see below), whose sum is σ = 349566. Its totient is φ = 99872.

The previous prime is 199741. The next prime is 199751. The reversal of 199748 is 847991.

It can be written as a sum of positive squares in only one way, i.e., 145924 + 53824 = 382^2 + 232^2 .

It is not an unprimeable number, because it can be changed into a prime (199741) by changing a digit.

199748 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24965 + ... + 24972.

It is an arithmetic number, because the mean of its divisors is an integer number (58261).

2¹⁹⁹⁷⁴⁸ is an apocalyptic number.

It is an amenable number.

199748 is a deficient number, since it is larger than the sum of its proper divisors (149818).

199748 is a wasteful number, since it uses less digits than its factorization.

199748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49941 (or 49939 counting only the distinct ones).

The product of its digits is 18144, while the sum is 38.

The square root of 199748 is about 446.9317621293. The cubic root of 199748 is about 58.4557826921.

The spelling of 199748 in words is "one hundred ninety-nine thousand, seven hundred forty-eight".