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49189 = 77027
BaseRepresentation
bin1100000000100101
32111110211
430000211
53033224
61015421
7263260
oct140045
974424
1049189
1133a58
1224571
131950a
1413cd7
15e894
hexc025

49189 has 4 divisors (see below), whose sum is σ = 56224. Its totient is φ = 42156.

The previous prime is 49177. The next prime is 49193. The reversal of 49189 is 98194.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 49189 - 25 = 49157 is a prime.

49189 is a modest number, since divided by 189 gives 49 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 49189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3507 + ... + 3520.

It is an arithmetic number, because the mean of its divisors is an integer number (14056).

249189 is an apocalyptic number.

It is an amenable number.

49189 is a deficient number, since it is larger than the sum of its proper divisors (7035).

49189 is an equidigital number, since it uses as much as digits as its factorization.

49189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7034.

The product of its digits is 2592, while the sum is 31.

The square root of 49189 is about 221.7859328271. The cubic root of 49189 is about 36.6400449552.

It can be divided in two parts, 49 and 189, that multiplied together give a cube (9261 = 213).

The spelling of 49189 in words is "forty-nine thousand, one hundred eighty-nine".

Divisors: 1 7 7027 49189