Search a number
-
+
989898907 = 73103173761
BaseRepresentation
bin111011000000001…
…010100010011011
32112222200002000111
4323000022202123
54011403231112
6242120545151
733350000434
oct7300124233
92488602014
10989898907
11468854778
122376221b7
1312a1115ca
149567c48b
155bd885a7
hex3b00a89b

989898907 has 16 divisors (see below), whose sum is σ = 1020397248. Its totient is φ = 960007680.

The previous prime is 989898887. The next prime is 989898929. The reversal of 989898907 is 709898989.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 989898907 - 215 = 989866139 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989898997) 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 15 ways as a sum of consecutive naturals, for example, 1300407 + ... + 1301167.

It is an arithmetic number, because the mean of its divisors is an integer number (63774828).

Almost surely, 2989898907 is an apocalyptic number.

989898907 is a deficient number, since it is larger than the sum of its proper divisors (30498341).

989898907 is a wasteful number, since it uses less digits than its factorization.

989898907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110.

The product of its (nonzero) digits is 23514624, while the sum is 67.

The square root of 989898907 is about 31462.6589308660. The cubic root of 989898907 is about 996.6215680512.

The spelling of 989898907 in words is "nine hundred eighty-nine million, eight hundred ninety-eight thousand, nine hundred seven".

Divisors: 1 73 103 173 761 7519 12629 17819 55553 78383 131653 1300787 5721959 9610669 13560259 989898907