13139471 has 2 divisors, whose sum is σ = 13139472. Its totient is φ = 13139470.

The previous prime is 13139459. The next prime is 13139519. The reversal of 13139471 is 17493131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13139471 is a prime.

It is a super-3 number, since 3×13139471³ (a number of 22 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13139411) 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 as a sum of consecutive naturals, namely, 6569735 + 6569736.

It is an arithmetic number, because the mean of its divisors is an integer number (6569736).

Almost surely, 2^13139471 is an apocalyptic number.

13139471 is a deficient number, since it is larger than the sum of its proper divisors (1).

13139471 is an equidigital number, since it uses as much as digits as its factorization.

13139471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 29.

The square root of 13139471 is about 3624.8408240915. The cubic root of 13139471 is about 235.9713589201.

The spelling of 13139471 in words is "thirteen million, one hundred thirty-nine thousand, four hundred seventy-one".