8712139104 has 72 divisors (see below), whose sum is σ = 24787624680. Its totient is φ = 2902583808.

The previous prime is 8712139091. The next prime is 8712139147. The reversal of 8712139104 is 4019312178.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 669492 + ... + 682380.

It is an arithmetic number, because the mean of its divisors is an integer number (344272565).

Almost surely, 2^8712139104 is an apocalyptic number.

It is an amenable number.

8712139104 is an abundant number, since it is smaller than the sum of its proper divisors (16075485576).

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

8712139104 is a wasteful number, since it uses less digits than its factorization.

8712139104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15252 (or 15241 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 8712139104 is about 93338.8402756323. The cubic root of 8712139104 is about 2057.6662470498. Note that the first 3 decimals are identical.

The spelling of 8712139104 in words is "eight billion, seven hundred twelve million, one hundred thirty-nine thousand, one hundred four".