139032029 has 4 divisors (see below), whose sum is σ = 142265376. Its totient is φ = 135798684.

The previous prime is 139032017. The next prime is 139032041. The reversal of 139032029 is 920230931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 920230931 = 197 ⋅4671223.

It is an interprime number because it is at equal distance from previous prime (139032017) and next prime (139032041).

It is a cyclic number.

It is not a de Polignac number, because 139032029 - 2¹⁶ = 138966493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139031992 and 139032010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139032059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1616609 + ... + 1616694.

It is an arithmetic number, because the mean of its divisors is an integer number (35566344).

Almost surely, 2^139032029 is an apocalyptic number.

It is an amenable number.

139032029 is a deficient number, since it is larger than the sum of its proper divisors (3233347).

139032029 is an equidigital number, since it uses as much as digits as its factorization.

139032029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233346.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 139032029 is about 11791.1843764738. The cubic root of 139032029 is about 518.0499310853.

The spelling of 139032029 in words is "one hundred thirty-nine million, thirty-two thousand, twenty-nine".