8912129 has 4 divisors (see below), whose sum is σ = 9129540. Its totient is φ = 8694720.

The previous prime is 8912107. The next prime is 8912147. The reversal of 8912129 is 9212198.

It is a happy number.

8912129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 801025 + 8111104 = 895^2 + 2848^2 .

It is a cyclic number.

It is not a de Polignac number, because 8912129 - 2¹² = 8908033 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8912095 and 8912104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8912929) 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, 108644 + ... + 108725.

It is an arithmetic number, because the mean of its divisors is an integer number (2282385).

Almost surely, 2^8912129 is an apocalyptic number.

It is an amenable number.

8912129 is a deficient number, since it is larger than the sum of its proper divisors (217411).

8912129 is a wasteful number, since it uses less digits than its factorization.

8912129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217410.

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

The square root of 8912129 is about 2985.3189109373. The cubic root of 8912129 is about 207.3292076965.

The spelling of 8912129 in words is "eight million, nine hundred twelve thousand, one hundred twenty-nine".