139603573 has 2 divisors, whose sum is σ = 139603574. Its totient is φ = 139603572.

The previous prime is 139603567. The next prime is 139603589. The reversal of 139603573 is 375306931.

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., 100140049 + 39463524 = 10007^2 + 6282^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139603573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139603523) 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, 69801786 + 69801787.

It is an arithmetic number, because the mean of its divisors is an integer number (69801787).

Almost surely, 2^139603573 is an apocalyptic number.

It is an amenable number.

139603573 is a deficient number, since it is larger than the sum of its proper divisors (1).

139603573 is an equidigital number, since it uses as much as digits as its factorization.

139603573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51030, while the sum is 37.

The square root of 139603573 is about 11815.3955921924. The cubic root of 139603573 is about 518.7588409390.

The spelling of 139603573 in words is "one hundred thirty-nine million, six hundred three thousand, five hundred seventy-three".