190947 has 4 divisors (see below), whose sum is σ = 254600. Its totient is φ = 127296.

The previous prime is 190921. The next prime is 190979. The reversal of 190947 is 749091.

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

It is a de Polignac number, because none of the positive numbers 2^k-190947 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31822 + ... + 31827.

It is an arithmetic number, because the mean of its divisors is an integer number (63650).

2¹⁹⁰⁹⁴⁷ is an apocalyptic number.

190947 is a deficient number, since it is larger than the sum of its proper divisors (63653).

190947 is an equidigital number, since it uses as much as digits as its factorization.

190947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63652.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 190947 is about 436.9748276503. The cubic root of 190947 is about 57.5843249206.

The spelling of 190947 in words is "one hundred ninety thousand, nine hundred forty-seven".