139989076 has 24 divisors (see below), whose sum is σ = 248106600. Its totient is φ = 69107712.

The previous prime is 139988993. The next prime is 139989103. The reversal of 139989076 is 670989931.

139989076 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 276676 + 139712400 = 526^2 + 11820^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114420 + ... + 115636.

It is an arithmetic number, because the mean of its divisors is an integer number (10337775).

Almost surely, 2^139989076 is an apocalyptic number.

It is an amenable number.

139989076 is a deficient number, since it is larger than the sum of its proper divisors (108117524).

139989076 is a wasteful number, since it uses less digits than its factorization.

139989076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563 (or 1561 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 139989076 is about 11831.6979339400. The cubic root of 139989076 is about 519.2359044039.

The spelling of 139989076 in words is "one hundred thirty-nine million, nine hundred eighty-nine thousand, seventy-six".