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14187979 = 1317431493
BaseRepresentation
bin110110000111…
…110111001011
3222200211020201
4312013313023
512113003404
61224033031
7231411241
oct66076713
928624221
1014187979
118010703
124902777
132c29b70
141c54791
1513a3ca4
hexd87dcb

14187979 has 16 divisors (see below), whose sum is σ = 16565472. Its totient is φ = 12031488.

The previous prime is 14187973. The next prime is 14187991. The reversal of 14187979 is 97978141.

It is a cyclic number.

It is not a de Polignac number, because 14187979 - 211 = 14185931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14187973) 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, 8757 + ... + 10249.

It is an arithmetic number, because the mean of its divisors is an integer number (1035342).

Almost surely, 214187979 is an apocalyptic number.

14187979 is a deficient number, since it is larger than the sum of its proper divisors (2377493).

14187979 is a wasteful number, since it uses less digits than its factorization.

14187979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566.

The product of its digits is 127008, while the sum is 46.

The square root of 14187979 is about 3766.6933774864. The cubic root of 14187979 is about 242.0881392401.

The spelling of 14187979 in words is "fourteen million, one hundred eighty-seven thousand, nine hundred seventy-nine".

Divisors: 1 13 17 43 221 559 731 1493 9503 19409 25381 64199 329953 834587 1091383 14187979