139130829 has 6 divisors (see below), whose sum is σ = 200966766. Its totient is φ = 92753880.

The previous prime is 139130807. The next prime is 139130837. The reversal of 139130829 is 928031931.

It can be written as a sum of positive squares in only one way, i.e., 103489929 + 35640900 = 10173^2 + 5970^2 .

It is not a de Polignac number, because 139130829 - 2⁷ = 139130701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139130793 and 139130802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139130869) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7729482 + ... + 7729499.

It is an arithmetic number, because the mean of its divisors is an integer number (33494461).

Almost surely, 2^139130829 is an apocalyptic number.

It is an amenable number.

139130829 is a deficient number, since it is larger than the sum of its proper divisors (61835937).

139130829 is a wasteful number, since it uses less digits than its factorization.

139130829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15458987 (or 15458984 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 139130829 is about 11795.3732030826. The cubic root of 139130829 is about 518.1726155589.

The spelling of 139130829 in words is "one hundred thirty-nine million, one hundred thirty thousand, eight hundred twenty-nine".