199090 has 16 divisors (see below), whose sum is σ = 367488. Its totient is φ = 77616.

The previous prime is 199081. The next prime is 199103. The reversal of 199090 is 90991.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199 + ... + 661.

It is an arithmetic number, because the mean of its divisors is an integer number (22968).

2¹⁹⁹⁰⁹⁰ is an apocalyptic number.

199090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199090 is a deficient number, since it is larger than the sum of its proper divisors (168398).

199090 is a wasteful number, since it uses less digits than its factorization.

199090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513.

The product of its (nonzero) digits is 729, while the sum is 28.

The square root of 199090 is about 446.1950246249. The cubic root of 199090 is about 58.3915246974.

It can be divided in two parts, 1990 and 90, that added together give a triangular number (2080 = T₆₄).

The spelling of 199090 in words is "one hundred ninety-nine thousand, ninety".