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6309421 = 47134243
BaseRepresentation
bin11000000100011000101101
3102212112220021
4120010120231
53103400141
6343122141
7104425546
oct30043055
912775807
106309421
11361a3a8
122143351
1313cbab1
14ba34cd
158496d1
hex60462d

6309421 has 4 divisors (see below), whose sum is σ = 6443712. Its totient is φ = 6175132.

The previous prime is 6309389. The next prime is 6309437. The reversal of 6309421 is 1249036.

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 6309421 - 25 = 6309389 is a prime.

It is a Duffinian number.

6309421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6309481) 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, 67075 + ... + 67168.

It is an arithmetic number, because the mean of its divisors is an integer number (1610928).

Almost surely, 26309421 is an apocalyptic number.

It is an amenable number.

6309421 is a deficient number, since it is larger than the sum of its proper divisors (134291).

6309421 is a wasteful number, since it uses less digits than its factorization.

6309421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134290.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 6309421 is about 2511.8560866419. The cubic root of 6309421 is about 184.7834915414.

The spelling of 6309421 in words is "six million, three hundred nine thousand, four hundred twenty-one".

Divisors: 1 47 134243 6309421