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4144387 = 132137179
BaseRepresentation
bin1111110011110100000011
321210120000211
433303310003
52030110022
6224454551
750140522
oct17636403
97716024
104144387
112380815
12147a457
13b21500
1479c4b9
1556ce77
hex3f3d03

4144387 has 12 divisors (see below), whose sum is σ = 4545720. Its totient is φ = 3776448.

The previous prime is 4144373. The next prime is 4144409. The reversal of 4144387 is 7834414.

It is a de Polignac number, because none of the positive numbers 2k-4144387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4144307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23064 + ... + 23242.

It is an arithmetic number, because the mean of its divisors is an integer number (378810).

Almost surely, 24144387 is an apocalyptic number.

4144387 is a deficient number, since it is larger than the sum of its proper divisors (401333).

4144387 is a wasteful number, since it uses less digits than its factorization.

With its successor (4144388) it forms an eRAP, since the sums of their prime factors are consecutive (342 and 343).

4144387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342 (or 329 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 4144387 is about 2035.7767559337. The cubic root of 4144387 is about 160.6275742849.

The spelling of 4144387 in words is "four million, one hundred forty-four thousand, three hundred eighty-seven".

Divisors: 1 13 137 169 179 1781 2327 23153 24523 30251 318799 4144387