199378092 has 24 divisors (see below), whose sum is σ = 468342000. Its totient is φ = 66012736.

The previous prime is 199378079. The next prime is 199378097. The reversal of 199378092 is 290873991.

It is not an unprimeable number, because it can be changed into a prime (199378097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53967 + ... + 57542.

It is an arithmetic number, because the mean of its divisors is an integer number (19514250).

Almost surely, 2^199378092 is an apocalyptic number.

199378092 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

199378092 is an abundant number, since it is smaller than the sum of its proper divisors (268963908).

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

199378092 is a wasteful number, since it uses less digits than its factorization.

199378092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111665 (or 111663 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 199378092 is about 14120.1307359387. The cubic root of 199378092 is about 584.1967615909.

The spelling of 199378092 in words is "one hundred ninety-nine million, three hundred seventy-eight thousand, ninety-two".