139841064 has 96 divisors (see below), whose sum is σ = 434959200. Its totient is φ = 40141440.

The previous prime is 139841047. The next prime is 139841071. The reversal of 139841064 is 460148931.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10402 + ... + 19694.

It is an arithmetic number, because the mean of its divisors is an integer number (4530825).

Almost surely, 2^139841064 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 139841064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217479600).

139841064 is an abundant number, since it is smaller than the sum of its proper divisors (295118136).

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

139841064 is a wasteful number, since it uses less digits than its factorization.

139841064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9335 (or 9328 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 139841064 is about 11825.4413871111. The cubic root of 139841064 is about 519.0528419139.

Adding to 139841064 its reverse (460148931), we get a palindrome (599989995).

The spelling of 139841064 in words is "one hundred thirty-nine million, eight hundred forty-one thousand, sixty-four".