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199438 = 299719
BaseRepresentation
bin110000101100001110
3101010120121
4300230032
522340223
64135154
71460311
oct605416
9333517
10199438
11126928
12974ba
136ca15
1452978
153e15d
hex30b0e

199438 has 4 divisors (see below), whose sum is σ = 299160. Its totient is φ = 99718.

The previous prime is 199429. The next prime is 199447. The reversal of 199438 is 834991.

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

It is an interprime number because it is at equal distance from previous prime (199429) and next prime (199447).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49858 + ... + 49861.

It is an arithmetic number, because the mean of its divisors is an integer number (74790).

2199438 is an apocalyptic number.

199438 is a deficient number, since it is larger than the sum of its proper divisors (99722).

199438 is an equidigital number, since it uses as much as digits as its factorization.

199438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99721.

The product of its digits is 7776, while the sum is 34.

The square root of 199438 is about 446.5848183716. The cubic root of 199438 is about 58.4255267776.

The spelling of 199438 in words is "one hundred ninety-nine thousand, four hundred thirty-eight".

Divisors: 1 2 99719 199438