139479084 has 144 divisors (see below), whose sum is σ = 405070848. Its totient is φ = 41741568.

The previous prime is 139479077. The next prime is 139479103. The reversal of 139479084 is 480974931.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 379869 + ... + 380235.

It is an arithmetic number, because the mean of its divisors is an integer number (2812992).

Almost surely, 2^139479084 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139479084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202535424).

139479084 is an abundant number, since it is smaller than the sum of its proper divisors (265591764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139479084 is a wasteful number, since it uses less digits than its factorization.

139479084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 139479084 is about 11810.1263329399. The cubic root of 139479084 is about 518.6045970959.

The spelling of 139479084 in words is "one hundred thirty-nine million, four hundred seventy-nine thousand, eighty-four".