139741673 has 2 divisors, whose sum is σ = 139741674. Its totient is φ = 139741672.

The previous prime is 139741663. The next prime is 139741687. The reversal of 139741673 is 376147931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122168809 + 17572864 = 11053^2 + 4192^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139741673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139741673.

It is not a weakly prime, because it can be changed into another prime (139741603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69870836 + 69870837.

It is an arithmetic number, because the mean of its divisors is an integer number (69870837).

Almost surely, 2^139741673 is an apocalyptic number.

It is an amenable number.

139741673 is a deficient number, since it is larger than the sum of its proper divisors (1).

139741673 is an equidigital number, since it uses as much as digits as its factorization.

139741673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 41.

The square root of 139741673 is about 11821.2382177165. The cubic root of 139741673 is about 518.9298417817.

The spelling of 139741673 in words is "one hundred thirty-nine million, seven hundred forty-one thousand, six hundred seventy-three".