139053641 has 2 divisors, whose sum is σ = 139053642. Its totient is φ = 139053640.

The previous prime is 139053583. The next prime is 139053643. The reversal of 139053641 is 146350931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127690000 + 11363641 = 11300^2 + 3371^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139053641 is a prime.

Together with 139053643, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 139053598 and 139053607.

It is not a weakly prime, because it can be changed into another prime (139053643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69526820 + 69526821.

It is an arithmetic number, because the mean of its divisors is an integer number (69526821).

Almost surely, 2^139053641 is an apocalyptic number.

It is an amenable number.

139053641 is a deficient number, since it is larger than the sum of its proper divisors (1).

139053641 is an equidigital number, since it uses as much as digits as its factorization.

139053641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 139053641 is about 11792.1007882396. The cubic root of 139053641 is about 518.0767726582.

The spelling of 139053641 in words is "one hundred thirty-nine million, fifty-three thousand, six hundred forty-one".