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4144279 = 6167939
BaseRepresentation
bin1111110011110010010111
321210112212211
433303302113
52030104104
6224454251
750140306
oct17636227
97715784
104144279
112380727
12147a387
13b21449
1479c43d
1556ce04
hex3f3c97

4144279 has 4 divisors (see below), whose sum is σ = 4212280. Its totient is φ = 4076280.

The previous prime is 4144271. The next prime is 4144291. The reversal of 4144279 is 9724414.

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 4144279 - 23 = 4144271 is a prime.

It is a Duffinian number.

4144279 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4144279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4144271) 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, 33909 + ... + 34030.

It is an arithmetic number, because the mean of its divisors is an integer number (1053070).

Almost surely, 24144279 is an apocalyptic number.

4144279 is a deficient number, since it is larger than the sum of its proper divisors (68001).

4144279 is an equidigital number, since it uses as much as digits as its factorization.

4144279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68000.

The product of its digits is 8064, while the sum is 31.

The square root of 4144279 is about 2035.7502302591. The cubic root of 4144279 is about 160.6261789898.

The spelling of 4144279 in words is "four million, one hundred forty-four thousand, two hundred seventy-nine".

Divisors: 1 61 67939 4144279