139497341 has 2 divisors, whose sum is σ = 139497342. Its totient is φ = 139497340.

The previous prime is 139497317. The next prime is 139497343. The reversal of 139497341 is 143794931.

It is a happy number.

139497341 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138556441 + 940900 = 11771^2 + 970^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139497341 is a prime.

Together with 139497343, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139497343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69748670 + 69748671.

It is an arithmetic number, because the mean of its divisors is an integer number (69748671).

Almost surely, 2^139497341 is an apocalyptic number.

It is an amenable number.

139497341 is a deficient number, since it is larger than the sum of its proper divisors (1).

139497341 is an equidigital number, since it uses as much as digits as its factorization.

139497341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 41.

The square root of 139497341 is about 11810.8992460354. The cubic root of 139497341 is about 518.6272235495.

The spelling of 139497341 in words is "one hundred thirty-nine million, four hundred ninety-seven thousand, three hundred forty-one".