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44139 = 314713
BaseRepresentation
bin1010110001101011
32020112210
422301223
52403024
6540203
7242454
oct126153
966483
1044139
1130187
1221663
1317124
141212b
15d129
hexac6b

44139 has 4 divisors (see below), whose sum is σ = 58856. Its totient is φ = 29424.

The previous prime is 44131. The next prime is 44159. The reversal of 44139 is 93144.

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

It is not a de Polignac number, because 44139 - 23 = 44131 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 (44131) 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, 7354 + ... + 7359.

It is an arithmetic number, because the mean of its divisors is an integer number (14714).

244139 is an apocalyptic number.

44139 is a deficient number, since it is larger than the sum of its proper divisors (14717).

44139 is a wasteful number, since it uses less digits than its factorization.

44139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14716.

The product of its digits is 432, while the sum is 21.

The square root of 44139 is about 210.0928366223. The cubic root of 44139 is about 35.3406199125.

It can be divided in two parts, 44 and 139, that multiplied together give a palindrome (6116).

The spelling of 44139 in words is "forty-four thousand, one hundred thirty-nine".

Divisors: 1 3 14713 44139