199398950 has 24 divisors (see below), whose sum is σ = 392700312. Its totient is φ = 75067520.

The previous prime is 199398943. The next prime is 199398961. The reversal of 199398950 is 59893991.

199398950 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×199398950² = 79519882522205000, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 199398892 and 199398901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116444 + ... + 118143.

It is an arithmetic number, because the mean of its divisors is an integer number (16362513).

Almost surely, 2^199398950 is an apocalyptic number.

199398950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199398950 is a deficient number, since it is larger than the sum of its proper divisors (193301362).

199398950 is a wasteful number, since it uses less digits than its factorization.

199398950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234616 (or 234611 counting only the distinct ones).

The product of its (nonzero) digits is 787320, while the sum is 53.

The square root of 199398950 is about 14120.8693075179. The cubic root of 199398950 is about 584.2171328548.

The spelling of 199398950 in words is "one hundred ninety-nine million, three hundred ninety-eight thousand, nine hundred fifty".