13534139 has 2 divisors, whose sum is σ = 13534140. Its totient is φ = 13534138.

The previous prime is 13534049. The next prime is 13534163. The reversal of 13534139 is 93143531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13534139 is a prime.

It is not a weakly prime, because it can be changed into another prime (13534439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6767069 + 6767070.

It is an arithmetic number, because the mean of its divisors is an integer number (6767070).

Almost surely, 2^13534139 is an apocalyptic number.

13534139 is a deficient number, since it is larger than the sum of its proper divisors (1).

13534139 is an equidigital number, since it uses as much as digits as its factorization.

13534139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 29.

The square root of 13534139 is about 3678.8774102979. The cubic root of 13534139 is about 238.3107010094.

The spelling of 13534139 in words is "thirteen million, five hundred thirty-four thousand, one hundred thirty-nine".