139235224 has 8 divisors (see below), whose sum is σ = 261066060. Its totient is φ = 69617608.

The previous prime is 139235203. The next prime is 139235231. The reversal of 139235224 is 422532931.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 8702194 + ... + 8702209.

Almost surely, 2^139235224 is an apocalyptic number.

It is an amenable number.

139235224 is a deficient number, since it is larger than the sum of its proper divisors (121830836).

139235224 is a wasteful number, since it uses less digits than its factorization.

139235224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17404409 (or 17404405 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 139235224 is about 11799.7976253832. The cubic root of 139235224 is about 518.3021845085.

The spelling of 139235224 in words is "one hundred thirty-nine million, two hundred thirty-five thousand, two hundred twenty-four".