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13966291 = 33741443
BaseRepresentation
bin110101010001…
…101111010011
3222021120011001
4311101233103
512033410131
61215202431
7226466023
oct65215723
928246131
1013966291
11797a099
124816417
132b7cca1
141bd7a83
15135d261
hexd51bd3

13966291 has 4 divisors (see below), whose sum is σ = 14008072. Its totient is φ = 13924512.

The previous prime is 13966283. The next prime is 13966297. The reversal of 13966291 is 19266931.

13966291 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 13966291 - 23 = 13966283 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13966291.

It is not an unprimeable number, because it can be changed into a prime (13966297) 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, 20385 + ... + 21058.

It is an arithmetic number, because the mean of its divisors is an integer number (3502018).

Almost surely, 213966291 is an apocalyptic number.

13966291 is a deficient number, since it is larger than the sum of its proper divisors (41781).

13966291 is an equidigital number, since it uses as much as digits as its factorization.

13966291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41780.

The product of its digits is 17496, while the sum is 37.

The square root of 13966291 is about 3737.1501174023. The cubic root of 13966291 is about 240.8206340876.

It can be divided in two parts, 139 and 66291, that added together give a triangular number (66430 = T364).

The spelling of 13966291 in words is "thirteen million, nine hundred sixty-six thousand, two hundred ninety-one".

Divisors: 1 337 41443 13966291