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2089469 = 12891621
BaseRepresentation
bin111111110000111111101
310221011012202
413332013331
51013330334
6112441245
723521514
oct7760775
93834182
102089469
1111a7938
12849225
13582095
143c567b
152b417e
hex1fe1fd

2089469 has 4 divisors (see below), whose sum is σ = 2092380. Its totient is φ = 2086560.

The previous prime is 2089457. The next prime is 2089489. The reversal of 2089469 is 9649802.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1651225 + 438244 = 1285^2 + 662^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2089469 is a prime.

It is a super-3 number, since 3×20894693 = 27367117153337246127, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2089489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479 + ... + 2099.

It is an arithmetic number, because the mean of its divisors is an integer number (523095).

22089469 is an apocalyptic number.

It is an amenable number.

2089469 is a deficient number, since it is larger than the sum of its proper divisors (2911).

2089469 is a wasteful number, since it uses less digits than its factorization.

2089469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2910.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 2089469 is about 1445.4995676236. The cubic root of 2089469 is about 127.8434976915.

The spelling of 2089469 in words is "two million, eighty-nine thousand, four hundred sixty-nine".

Divisors: 1 1289 1621 2089469