990900229 has 8 divisors (see below), whose sum is σ = 1081225440. Its totient is φ = 900615600.

The previous prime is 990900227. The next prime is 990900241. The reversal of 990900229 is 922009099.

990900229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 990900229 - 2¹ = 990900227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 990900191 and 990900200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990900227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65427 + ... + 79135.

It is an arithmetic number, because the mean of its divisors is an integer number (135153180).

Almost surely, 2^990900229 is an apocalyptic number.

It is an amenable number.

990900229 is a deficient number, since it is larger than the sum of its proper divisors (90325211).

990900229 is a wasteful number, since it uses less digits than its factorization.

990900229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20291.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 990900229 is about 31478.5677723749. The cubic root of 990900229 is about 996.9574955547.

The spelling of 990900229 in words is "nine hundred ninety million, nine hundred thousand, two hundred twenty-nine".