139512284 has 6 divisors (see below), whose sum is σ = 244146504. Its totient is φ = 69756140.

The previous prime is 139512257. The next prime is 139512313. The reversal of 139512284 is 482215931.

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, 17439032 + ... + 17439039.

It is an arithmetic number, because the mean of its divisors is an integer number (40691084).

Almost surely, 2^139512284 is an apocalyptic number.

It is an amenable number.

139512284 is a deficient number, since it is larger than the sum of its proper divisors (104634220).

139512284 is a wasteful number, since it uses less digits than its factorization.

139512284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34878075 (or 34878073 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 139512284 is about 11811.5318227569. The cubic root of 139512284 is about 518.6457413932.

The spelling of 139512284 in words is "one hundred thirty-nine million, five hundred twelve thousand, two hundred eighty-four".