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8899945 = 53167857
BaseRepresentation
bin100001111100…
…110101101001
3121202011102121
4201330311221
54234244240
6514431241
7135435235
oct41746551
917664377
108899945
11502972a
122b92521
131ac7c52
1412795c5
15bac04a
hex87cd69

8899945 has 16 divisors (see below), whose sum is σ = 11202048. Its totient is φ = 6779520.

The previous prime is 8899937. The next prime is 8899949. The reversal of 8899945 is 5499988.

It is not a de Polignac number, because 8899945 - 23 = 8899937 is a prime.

It is a fibodiv number, since the Fibonacci-like sequence with seeds 88 and 99945 contains 8899945 itself.

It is a Duffinian number.

Its product of digits (933120) is a multiple of the sum of its prime divisors (960).

It is a junction number, because it is equal to n+sod(n) for n = 8899892 and 8899901.

It is not an unprimeable number, because it can be changed into a prime (8899949) 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, 9957 + ... + 10813.

It is an arithmetic number, because the mean of its divisors is an integer number (700128).

Almost surely, 28899945 is an apocalyptic number.

It is an amenable number.

8899945 is a deficient number, since it is larger than the sum of its proper divisors (2302103).

8899945 is a wasteful number, since it uses less digits than its factorization.

8899945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960.

The product of its digits is 933120, while the sum is 52.

The square root of 8899945 is about 2983.2775600001. The cubic root of 8899945 is about 207.2346829162.

The spelling of 8899945 in words is "eight million, eight hundred ninety-nine thousand, nine hundred forty-five".