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190939 = 727277
BaseRepresentation
bin101110100111011011
3100200220211
4232213123
522102224
64031551
71423450
oct564733
9320824
10190939
11120501
12925b7
1368ba8
144d827
153b894
hex2e9db

190939 has 4 divisors (see below), whose sum is σ = 218224. Its totient is φ = 163656.

The previous prime is 190921. The next prime is 190979. The reversal of 190939 is 939091.

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

It is a cyclic number.

It is not a de Polignac number, because 190939 - 27 = 190811 is a prime.

It is an Ulam number.

It is a Duffinian number.

190939 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 190939.

It is not an unprimeable number, because it can be changed into a prime (190909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13632 + ... + 13645.

It is an arithmetic number, because the mean of its divisors is an integer number (54556).

2190939 is an apocalyptic number.

190939 is a deficient number, since it is larger than the sum of its proper divisors (27285).

190939 is an equidigital number, since it uses as much as digits as its factorization.

190939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27284.

The product of its (nonzero) digits is 2187, while the sum is 31.

The square root of 190939 is about 436.9656737090. The cubic root of 190939 is about 57.5835207166.

The spelling of 190939 in words is "one hundred ninety thousand, nine hundred thirty-nine".

Divisors: 1 7 27277 190939