9920229 has 16 divisors (see below), whose sum is σ = 14767104. Its totient is φ = 5871600.

The previous prime is 9920219. The next prime is 9920249. The reversal of 9920229 is 9220299.

It is not a de Polignac number, because 9920229 - 2⁴ = 9920213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9920229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9920219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2077 + ... + 4914.

It is an arithmetic number, because the mean of its divisors is an integer number (922944).

Almost surely, 2^9920229 is an apocalyptic number.

It is an amenable number.

9920229 is a deficient number, since it is larger than the sum of its proper divisors (4846875).

9920229 is a wasteful number, since it uses less digits than its factorization.

9920229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7048.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 9920229 is about 3149.6395031813. The cubic root of 9920229 is about 214.8690675667.

The spelling of 9920229 in words is "nine million, nine hundred twenty thousand, two hundred twenty-nine".