139663384 has 64 divisors (see below), whose sum is σ = 312076800. Its totient is φ = 57350400.

The previous prime is 139663369. The next prime is 139663387. The reversal of 139663384 is 483366931.

139663384 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 139663384.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139663387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134949 + ... + 135979.

It is an arithmetic number, because the mean of its divisors is an integer number (4876200).

Almost surely, 2^139663384 is an apocalyptic number.

139663384 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139663384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156038400).

139663384 is an abundant number, since it is smaller than the sum of its proper divisors (172413416).

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

139663384 is a wasteful number, since it uses less digits than its factorization.

139663384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144 (or 1140 counting only the distinct ones).

The product of its digits is 279936, while the sum is 43.

The square root of 139663384 is about 11817.9263832535. The cubic root of 139663384 is about 518.8329151057.

The spelling of 139663384 in words is "one hundred thirty-nine million, six hundred sixty-three thousand, three hundred eighty-four".