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9144989 = 710631229
BaseRepresentation
bin100010111000…
…101010011101
3122012121120022
4202320222131
54320114424
6524001525
7140505530
oct42705235
918177508
109144989
115186847
1230902a5
131b82649
141300a17
15c0995e
hex8b8a9d

9144989 has 8 divisors (see below), whose sum is σ = 10469760. Its totient is φ = 7824816.

The previous prime is 9144917. The next prime is 9145033. The reversal of 9144989 is 9894419.

9144989 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 9144989 - 212 = 9140893 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9144389) 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, 6827 + ... + 8055.

It is an arithmetic number, because the mean of its divisors is an integer number (1308720).

Almost surely, 29144989 is an apocalyptic number.

It is an amenable number.

9144989 is a deficient number, since it is larger than the sum of its proper divisors (1324771).

9144989 is a wasteful number, since it uses less digits than its factorization.

9144989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2299.

The product of its digits is 93312, while the sum is 44.

The square root of 9144989 is about 3024.0682862660. The cubic root of 9144989 is about 209.1194344940.

The spelling of 9144989 in words is "nine million, one hundred forty-four thousand, nine hundred eighty-nine".

Divisors: 1 7 1063 1229 7441 8603 1306427 9144989