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13937943 = 317674079
BaseRepresentation
bin110101001010…
…110100010111
3222020010021010
4311022310113
512032003233
61214423303
7226320255
oct65126427
928203233
1013937943
11795a868
124801b33
132b70106
141bcb5d5
151354b63
hexd4ad17

13937943 has 16 divisors (see below), whose sum is σ = 19975680. Its totient is φ = 8612736.

The previous prime is 13937929. The next prime is 13937953. The reversal of 13937943 is 34973931.

It is not a de Polignac number, because 13937943 - 28 = 13937687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13937923) 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 15 ways as a sum of consecutive naturals, for example, 1378 + ... + 5456.

It is an arithmetic number, because the mean of its divisors is an integer number (1248480).

Almost surely, 213937943 is an apocalyptic number.

13937943 is a deficient number, since it is larger than the sum of its proper divisors (6037737).

13937943 is a wasteful number, since it uses less digits than its factorization.

13937943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4166.

The product of its digits is 61236, while the sum is 39.

The square root of 13937943 is about 3733.3554612439. The cubic root of 13937943 is about 240.6575889521.

The spelling of 13937943 in words is "thirteen million, nine hundred thirty-seven thousand, nine hundred forty-three".

Divisors: 1 3 17 51 67 201 1139 3417 4079 12237 69343 208029 273293 819879 4645981 13937943