139428583 has 6 divisors (see below), whose sum is σ = 159382664. Its totient is φ = 119483436.

The previous prime is 139428571. The next prime is 139428643. The reversal of 139428583 is 385824931.

139428583 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-139428583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139428533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29010 + ... + 33472.

Almost surely, 2^139428583 is an apocalyptic number.

139428583 is a deficient number, since it is larger than the sum of its proper divisors (19954081).

139428583 is an frugal number, since it uses more digits than its factorization.

139428583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8933 (or 4470 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The square root of 139428583 is about 11807.9881012813. The cubic root of 139428583 is about 518.5419993895.

The spelling of 139428583 in words is "one hundred thirty-nine million, four hundred twenty-eight thousand, five hundred eighty-three".