199492 has 12 divisors (see below), whose sum is σ = 356076. Its totient is φ = 97760.

The previous prime is 199489. The next prime is 199499. The reversal of 199492 is 294991.

It can be written as a sum of positive squares in 2 ways, for example, as 133956 + 65536 = 366^2 + 256^2 .

It is a plaindrome in base 9.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259 + ... + 682.

It is an arithmetic number, because the mean of its divisors is an integer number (29673).

2¹⁹⁹⁴⁹² is an apocalyptic number.

It is an amenable number.

199492 is a deficient number, since it is larger than the sum of its proper divisors (156584).

199492 is a wasteful number, since it uses less digits than its factorization.

199492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998 (or 996 counting only the distinct ones).

The product of its digits is 5832, while the sum is 34.

The square root of 199492 is about 446.6452731195. The cubic root of 199492 is about 58.4307994167.

The spelling of 199492 in words is "one hundred ninety-nine thousand, four hundred ninety-two".