13907 has 2 divisors, whose sum is σ = 13908. Its totient is φ = 13906.
The previous prime is 13903. The next prime is 13913. The reversal of 13907 is 70931.
13907 is nontrivially palindromic in base 7.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 13907 - 22 = 13903 is a prime.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (13901) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6953 + 6954.
It is an arithmetic number, because the mean of its divisors is an integer number (6954).
213907 is an apocalyptic number.
13907 is a deficient number, since it is larger than the sum of its proper divisors (1).
13907 is an equidigital number, since it uses as much as digits as its factorization.
13907 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 189, while the sum is 20.
The square root of 13907 is about 117.9279441015. The cubic root of 13907 is about 24.0479365971.
It can be divided in two parts, 1390 and 7, that multiplied together give a triangular number (9730 = T139).
The spelling of 13907 in words is "thirteen thousand, nine hundred seven".
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