139136829 has 32 divisors (see below), whose sum is σ = 212459520. Its totient is φ = 80284608.

The previous prime is 139136827. The next prime is 139136839. The reversal of 139136829 is 928631931.

139136829 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139136829 - 2¹ = 139136827 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139136827) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75412 + ... + 77234.

It is an arithmetic number, because the mean of its divisors is an integer number (6639360).

Almost surely, 2^139136829 is an apocalyptic number.

139136829 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

139136829 is a deficient number, since it is larger than the sum of its proper divisors (73322691).

139136829 is a wasteful number, since it uses less digits than its factorization.

139136829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961.

The product of its digits is 69984, while the sum is 42.

The square root of 139136829 is about 11795.6275373547. The cubic root of 139136829 is about 518.1800641621.

The spelling of 139136829 in words is "one hundred thirty-nine million, one hundred thirty-six thousand, eight hundred twenty-nine".