199043490 has 16 divisors (see below), whose sum is σ = 477704448. Its totient is φ = 53078256.

The previous prime is 199043489. The next prime is 199043491. The reversal of 199043490 is 94340991.

It is an interprime number because it is at equal distance from previous prime (199043489) and next prime (199043491).

It is a super-2 number, since 2×199043490² = 79236621822760200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (199043491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3317362 + ... + 3317421.

It is an arithmetic number, because the mean of its divisors is an integer number (29856528).

Almost surely, 2^199043490 is an apocalyptic number.

199043490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199043490 is an abundant number, since it is smaller than the sum of its proper divisors (278660958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199043490 is a wasteful number, since it uses less digits than its factorization.

199043490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6634793.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 199043490 is about 14108.2773576365. The cubic root of 199043490 is about 583.8697733804.

The spelling of 199043490 in words is "one hundred ninety-nine million, forty-three thousand, four hundred ninety".