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9994643 = 20874789
BaseRepresentation
bin100110001000…
…000110010011
3200210210001222
4212020012103
510024312033
6554115255
7150644621
oct46100623
920723058
109994643
11570713a
12341bb2b
1320bc2b9
141482511
15d26598
hex988193

9994643 has 4 divisors (see below), whose sum is σ = 10001520. Its totient is φ = 9987768.

The previous prime is 9994631. The next prime is 9994669. The reversal of 9994643 is 3464999.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3464999 = 22915131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-9994643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9994594 and 9994603.

It is not an unprimeable number, because it can be changed into a prime (9994603) 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, 308 + ... + 4481.

It is an arithmetic number, because the mean of its divisors is an integer number (2500380).

Almost surely, 29994643 is an apocalyptic number.

9994643 is a deficient number, since it is larger than the sum of its proper divisors (6877).

9994643 is a wasteful number, since it uses less digits than its factorization.

9994643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6876.

The product of its digits is 209952, while the sum is 44.

The square root of 9994643 is about 3161.4305306301. The cubic root of 9994643 is about 215.4049911094.

The spelling of 9994643 in words is "nine million, nine hundred ninety-four thousand, six hundred forty-three".

Divisors: 1 2087 4789 9994643