139536773 has 2 divisors, whose sum is σ = 139536774. Its totient is φ = 139536772.

The previous prime is 139536767. The next prime is 139536823. The reversal of 139536773 is 377635931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113912929 + 25623844 = 10673^2 + 5062^2 .

It is a cyclic number.

It is not a de Polignac number, because 139536773 - 2⁸ = 139536517 is a prime.

It is a super-2 number, since 2×139536773² = 38941022038507058, which contains 22 as substring.

It is equal to p_7887419 and since 139536773 and 7887419 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139536713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69768386 + 69768387.

It is an arithmetic number, because the mean of its divisors is an integer number (69768387).

Almost surely, 2^139536773 is an apocalyptic number.

It is an amenable number.

139536773 is a deficient number, since it is larger than the sum of its proper divisors (1).

139536773 is an equidigital number, since it uses as much as digits as its factorization.

139536773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 357210, while the sum is 44.

The square root of 139536773 is about 11812.5684336642. The cubic root of 139536773 is about 518.6760860867.

It can be divided in two parts, 139536 and 773, that multiplied together give a triangular number (107861328 = T₁₄₆₈₇).

The spelling of 139536773 in words is "one hundred thirty-nine million, five hundred thirty-six thousand, seven hundred seventy-three".