139825789 has 2 divisors, whose sum is σ = 139825790. Its totient is φ = 139825788.

The previous prime is 139825759. The next prime is 139825823. The reversal of 139825789 is 987528931.

139825789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102212100 + 37613689 = 10110^2 + 6133^2 .

It is a cyclic number.

It is not a de Polignac number, because 139825789 - 2¹¹ = 139823741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139825729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69912894 + 69912895.

It is an arithmetic number, because the mean of its divisors is an integer number (69912895).

Almost surely, 2^139825789 is an apocalyptic number.

It is an amenable number.

139825789 is a deficient number, since it is larger than the sum of its proper divisors (1).

139825789 is an equidigital number, since it uses as much as digits as its factorization.

139825789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 52.

The square root of 139825789 is about 11824.7955162024. The cubic root of 139825789 is about 519.0339423131.

The spelling of 139825789 in words is "one hundred thirty-nine million, eight hundred twenty-five thousand, seven hundred eighty-nine".