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89630911 = 283316717
BaseRepresentation
bin1010101011110…
…10100010111111
320020122201111101
411111322202333
5140421142121
612521033531
72135564416
oct525724277
9206581441
1089630911
114665a037
12260258a7
1315752c56
14bc9247d
157d07491
hex557a8bf

89630911 has 4 divisors (see below), whose sum is σ = 89947912. Its totient is φ = 89313912.

The previous prime is 89630903. The next prime is 89630917. The reversal of 89630911 is 11903698.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11903698 = 25951849.

It is a cyclic number.

It is not a de Polignac number, because 89630911 - 23 = 89630903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89630917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158076 + ... + 158641.

It is an arithmetic number, because the mean of its divisors is an integer number (22486978).

Almost surely, 289630911 is an apocalyptic number.

89630911 is a deficient number, since it is larger than the sum of its proper divisors (317001).

89630911 is a wasteful number, since it uses less digits than its factorization.

89630911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317000.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 89630911 is about 9467.3602973585. The cubic root of 89630911 is about 447.5270289428.

The spelling of 89630911 in words is "eighty-nine million, six hundred thirty thousand, nine hundred eleven".

Divisors: 1 283 316717 89630911