138550029 has 16 divisors (see below), whose sum is σ = 189834624. Its totient is φ = 89830400.

The previous prime is 138550019. The next prime is 138550103. The reversal of 138550029 is 920055831.

It is a cyclic number.

It is not a de Polignac number, because 138550029 - 2⁵ = 138549997 is a prime.

It is a super-2 number, since 2×138550029² = 38392221071801682, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138550019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41824 + ... + 45014.

It is an arithmetic number, because the mean of its divisors is an integer number (11864664).

Almost surely, 2^138550029 is an apocalyptic number.

It is an amenable number.

138550029 is a deficient number, since it is larger than the sum of its proper divisors (51284595).

138550029 is a wasteful number, since it uses less digits than its factorization.

138550029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3588.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 138550029 is about 11770.7276325638. The cubic root of 138550029 is about 517.4505747564.

The spelling of 138550029 in words is "one hundred thirty-eight million, five hundred fifty thousand, twenty-nine".