139789952 has 64 divisors (see below), whose sum is σ = 294053760. Its totient is φ = 66063360.

The previous prime is 139789931. The next prime is 139789961. The reversal of 139789952 is 259987931.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 139789894 and 139789903.

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, 303002 + ... + 303462.

It is an arithmetic number, because the mean of its divisors is an integer number (4594590).

Almost surely, 2^139789952 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 139789952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147026880).

139789952 is an abundant number, since it is smaller than the sum of its proper divisors (154263808).

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

139789952 is a wasteful number, since it uses less digits than its factorization.

139789952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 589 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 53.

The square root of 139789952 is about 11823.2800863381. The cubic root of 139789952 is about 518.9895961572.

The spelling of 139789952 in words is "one hundred thirty-nine million, seven hundred eighty-nine thousand, nine hundred fifty-two".