8129912 has 16 divisors (see below), whose sum is σ = 17421360. Its totient is φ = 3484224.

The previous prime is 8129909. The next prime is 8129917. The reversal of 8129912 is 2199218.

It is a happy number.

It is a super-4 number, since 4×8129912⁴ (a number of 29 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8129917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72533 + ... + 72644.

It is an arithmetic number, because the mean of its divisors is an integer number (1088835).

Almost surely, 2^8129912 is an apocalyptic number.

It is an amenable number.

8129912 is an abundant number, since it is smaller than the sum of its proper divisors (9291448).

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

8129912 is a wasteful number, since it uses less digits than its factorization.

8129912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145190 (or 145186 counting only the distinct ones).

The product of its digits is 2592, while the sum is 32.

The square root of 8129912 is about 2851.3000543612. The cubic root of 8129912 is about 201.0767921886.

The spelling of 8129912 in words is "eight million, one hundred twenty-nine thousand, nine hundred twelve".