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4789489 = 21122699
BaseRepresentation
bin10010010001010011110001
3100000022221111
4102101103301
52211230424
6250353321
755465345
oct22212361
910008844
104789489
112781461
12172b841
13cb9023
148c9625
15649194
hex4914f1

4789489 has 4 divisors (see below), whose sum is σ = 4812400. Its totient is φ = 4766580.

The previous prime is 4789487. The next prime is 4789513. The reversal of 4789489 is 9849874.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4789489 - 21 = 4789487 is a prime.

It is a super-2 number, since 2×47894892 = 45878409762242, which contains 22 as substring.

It is a d-powerful number, because it can be written as 44 + 73 + 87 + 95 + 46 + 87 + 96 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4789487) 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, 11139 + ... + 11560.

It is an arithmetic number, because the mean of its divisors is an integer number (1203100).

Almost surely, 24789489 is an apocalyptic number.

It is an amenable number.

4789489 is a deficient number, since it is larger than the sum of its proper divisors (22911).

4789489 is a wasteful number, since it uses less digits than its factorization.

4789489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22910.

The product of its digits is 580608, while the sum is 49.

The square root of 4789489 is about 2188.4901187805. The cubic root of 4789489 is about 168.5633136201.

The spelling of 4789489 in words is "four million, seven hundred eighty-nine thousand, four hundred eighty-nine".

Divisors: 1 211 22699 4789489