8781439022 has 4 divisors (see below), whose sum is σ = 13172158536. Its totient is φ = 4390719510.

The previous prime is 8781439001. The next prime is 8781439027. The reversal of 8781439022 is 2209341878.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×8781439022² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8781439027) 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 as a sum of consecutive naturals, namely, 2195359754 + ... + 2195359757.

It is an arithmetic number, because the mean of its divisors is an integer number (3293039634).

Almost surely, 2^8781439022 is an apocalyptic number.

8781439022 is a deficient number, since it is larger than the sum of its proper divisors (4390719514).

8781439022 is a wasteful number, since it uses less digits than its factorization.

8781439022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4390719513.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 8781439022 is about 93709.3326302135. The cubic root of 8781439022 is about 2063.1076843081.

The spelling of 8781439022 in words is "eight billion, seven hundred eighty-one million, four hundred thirty-nine thousand, twenty-two".