139672573 has 2 divisors, whose sum is σ = 139672574. Its totient is φ = 139672572.

The previous prime is 139672571. The next prime is 139672619. The reversal of 139672573 is 375276931.

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., 117223929 + 22448644 = 10827^2 + 4738^2 .

It is a cyclic number.

It is not a de Polignac number, because 139672573 - 2¹ = 139672571 is a prime.

Together with 139672571, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139672571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69836286 + 69836287.

It is an arithmetic number, because the mean of its divisors is an integer number (69836287).

Almost surely, 2^139672573 is an apocalyptic number.

It is an amenable number.

139672573 is a deficient number, since it is larger than the sum of its proper divisors (1).

139672573 is an equidigital number, since it uses as much as digits as its factorization.

139672573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 238140, while the sum is 43.

The square root of 139672573 is about 11818.3151506465. The cubic root of 139672573 is about 518.8442935380.

The spelling of 139672573 in words is "one hundred thirty-nine million, six hundred seventy-two thousand, five hundred seventy-three".