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83149 = 117559
BaseRepresentation
bin10100010011001101
311020001121
4110103031
510130044
61440541
7464263
oct242315
9136047
1083149
1157520
1240151
132bb01
1422433
1519984
hex144cd

83149 has 4 divisors (see below), whose sum is σ = 90720. Its totient is φ = 75580.

The previous prime is 83137. The next prime is 83177. The reversal of 83149 is 94138.

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 83149 - 25 = 83117 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83449) 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, 3769 + ... + 3790.

It is an arithmetic number, because the mean of its divisors is an integer number (22680).

283149 is an apocalyptic number.

It is an amenable number.

83149 is a deficient number, since it is larger than the sum of its proper divisors (7571).

83149 is a wasteful number, since it uses less digits than its factorization.

83149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7570.

The product of its digits is 864, while the sum is 25.

The square root of 83149 is about 288.3556831415. The cubic root of 83149 is about 43.6467934612.

It can be divided in two parts, 83 and 149, that added together give a palindrome (232).

The spelling of 83149 in words is "eighty-three thousand, one hundred forty-nine".

Divisors: 1 11 7559 83149