139258829 has 2 divisors, whose sum is σ = 139258830. Its totient is φ = 139258828.

The previous prime is 139258759. The next prime is 139258877. The reversal of 139258829 is 928852931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86304100 + 52954729 = 9290^2 + 7277^2 .

It is a cyclic number.

It is not a de Polignac number, because 139258829 - 2⁸ = 139258573 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139258129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69629414 + 69629415.

It is an arithmetic number, because the mean of its divisors is an integer number (69629415).

Almost surely, 2^139258829 is an apocalyptic number.

It is an amenable number.

139258829 is a deficient number, since it is larger than the sum of its proper divisors (1).

139258829 is an equidigital number, since it uses as much as digits as its factorization.

139258829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 47.

The square root of 139258829 is about 11800.7978120125. The cubic root of 139258829 is about 518.3314726713.

The spelling of 139258829 in words is "one hundred thirty-nine million, two hundred fifty-eight thousand, eight hundred twenty-nine".