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214442439 = 3149593809
BaseRepresentation
bin11001100100000…
…10000111000111
3112221111210201120
430302002013013
5414344124224
633140125023
75212505421
oct1462020707
9487453646
10214442439
11100057862
125b996773
1335572c23
14206a1811
1513c5d779
hexcc821c7

214442439 has 16 divisors (see below), whose sum is σ = 288684000. Its totient is φ = 141587456.

The previous prime is 214442413. The next prime is 214442441. The reversal of 214442439 is 934244412.

It is a cyclic number.

It is not a de Polignac number, because 214442439 - 223 = 206053831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214442479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264667 + ... + 265475.

It is an arithmetic number, because the mean of its divisors is an integer number (18042750).

Almost surely, 2214442439 is an apocalyptic number.

214442439 is a deficient number, since it is larger than the sum of its proper divisors (74241561).

214442439 is a wasteful number, since it uses less digits than its factorization.

214442439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554.

The product of its digits is 27648, while the sum is 33.

The square root of 214442439 is about 14643.8532838867. The cubic root of 214442439 is about 598.5543334334.

The spelling of 214442439 in words is "two hundred fourteen million, four hundred forty-two thousand, four hundred thirty-nine".

Divisors: 1 3 149 447 593 809 1779 2427 88357 120541 265071 361623 479737 1439211 71480813 214442439