139157773 has 2 divisors, whose sum is σ = 139157774. Its totient is φ = 139157772.

The previous prime is 139157749. The next prime is 139157803. The reversal of 139157773 is 377751931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132204004 + 6953769 = 11498^2 + 2637^2 .

It is a cyclic number.

It is not a de Polignac number, because 139157773 - 2¹³ = 139149581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139157173) 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, 69578886 + 69578887.

It is an arithmetic number, because the mean of its divisors is an integer number (69578887).

Almost surely, 2^139157773 is an apocalyptic number.

It is an amenable number.

139157773 is a deficient number, since it is larger than the sum of its proper divisors (1).

139157773 is an equidigital number, since it uses as much as digits as its factorization.

139157773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138915, while the sum is 43.

The square root of 139157773 is about 11796.5152905424. The cubic root of 139157773 is about 518.2060630746.

The spelling of 139157773 in words is "one hundred thirty-nine million, one hundred fifty-seven thousand, seven hundred seventy-three".