138863322 has 96 divisors (see below), whose sum is σ = 347343360. Its totient is φ = 41290560.

The previous prime is 138863321. The next prime is 138863359. The reversal of 138863322 is 223368831.

138863322 is a `hidden beast` number, since 13 + 8 + 8 + 633 + 2 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (138863321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 195504 + ... + 196212.

It is an arithmetic number, because the mean of its divisors is an integer number (3618160).

Almost surely, 2^138863322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138863322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173671680).

138863322 is an abundant number, since it is smaller than the sum of its proper divisors (208480038).

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

138863322 is a wasteful number, since it uses less digits than its factorization.

138863322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770 (or 758 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 138863322 is about 11784.0282586219. The cubic root of 138863322 is about 517.8403054683.

The spelling of 138863322 in words is "one hundred thirty-eight million, eight hundred sixty-three thousand, three hundred twenty-two".