139955224 has 8 divisors (see below), whose sum is σ = 262416060. Its totient is φ = 69977608.

The previous prime is 139955213. The next prime is 139955243. The reversal of 139955224 is 422559931.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 8747194 + ... + 8747209.

Almost surely, 2^139955224 is an apocalyptic number.

It is an amenable number.

139955224 is a deficient number, since it is larger than the sum of its proper divisors (122460836).

139955224 is a wasteful number, since it uses less digits than its factorization.

139955224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17494409 (or 17494405 counting only the distinct ones).

The product of its digits is 97200, while the sum is 40.

The square root of 139955224 is about 11830.2672835401. The cubic root of 139955224 is about 519.1940473501.

The spelling of 139955224 in words is "one hundred thirty-nine million, nine hundred fifty-five thousand, two hundred twenty-four".