139544229 has 8 divisors (see below), whose sum is σ = 202973472. Its totient is φ = 84572240.

The previous prime is 139544221. The next prime is 139544231. The reversal of 139544229 is 922445931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139544229 - 2³ = 139544221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139544221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2114274 + ... + 2114339.

It is an arithmetic number, because the mean of its divisors is an integer number (25371684).

Almost surely, 2^139544229 is an apocalyptic number.

It is an amenable number.

139544229 is a deficient number, since it is larger than the sum of its proper divisors (63429243).

139544229 is a wasteful number, since it uses less digits than its factorization.

139544229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4228627.

The product of its digits is 77760, while the sum is 39.

The square root of 139544229 is about 11812.8840255037. The cubic root of 139544229 is about 518.6853242250.

The spelling of 139544229 in words is "one hundred thirty-nine million, five hundred forty-four thousand, two hundred twenty-nine".