13139741 has 2 divisors, whose sum is σ = 13139742. Its totient is φ = 13139740.

The previous prime is 13139723. The next prime is 13139767. The reversal of 13139741 is 14793131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8099716 + 5040025 = 2846^2 + 2245^2 .

It is a cyclic number.

It is not a de Polignac number, because 13139741 - 2⁶ = 13139677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13139341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6569870 + 6569871.

It is an arithmetic number, because the mean of its divisors is an integer number (6569871).

Almost surely, 2^13139741 is an apocalyptic number.

It is an amenable number.

13139741 is a deficient number, since it is larger than the sum of its proper divisors (1).

13139741 is an equidigital number, since it uses as much as digits as its factorization.

13139741 is an evil number, because the sum of its binary digits is even.

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

The square root of 13139741 is about 3624.8780669148. The cubic root of 13139741 is about 235.9729752163.

The spelling of 13139741 in words is "thirteen million, one hundred thirty-nine thousand, seven hundred forty-one".