8920829 has 4 divisors (see below), whose sum is σ = 8934684. Its totient is φ = 8906976.

The previous prime is 8920817. The next prime is 8920837. The reversal of 8920829 is 9280298.

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 7828804 + 1092025 = 2798^2 + 1045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8920829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8920792 and 8920801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8920889) 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 3 ways as a sum of consecutive naturals, for example, 5912 + ... + 7265.

It is an arithmetic number, because the mean of its divisors is an integer number (2233671).

Almost surely, 2^8920829 is an apocalyptic number.

It is an amenable number.

8920829 is a deficient number, since it is larger than the sum of its proper divisors (13855).

8920829 is a wasteful number, since it uses less digits than its factorization.

8920829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13854.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 8920829 is about 2986.7756862543. The cubic root of 8920829 is about 207.3966505220.

The spelling of 8920829 in words is "eight million, nine hundred twenty thousand, eight hundred twenty-nine".