139678029 has 12 divisors (see below), whose sum is σ = 203347456. Its totient is φ = 92384712.

The previous prime is 139678013. The next prime is 139678037. The reversal of 139678029 is 920876931.

It is not a de Polignac number, because 139678029 - 2⁴ = 139678013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139678009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59959 + ... + 62244.

Almost surely, 2^139678029 is an apocalyptic number.

It is an amenable number.

139678029 is a deficient number, since it is larger than the sum of its proper divisors (63669427).

139678029 is a wasteful number, since it uses less digits than its factorization.

139678029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122336 (or 122333 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 139678029 is about 11818.5459765574. The cubic root of 139678029 is about 518.8510492848.

The spelling of 139678029 in words is "one hundred thirty-nine million, six hundred seventy-eight thousand, twenty-nine".