Search a number
6929381 is a prime number
BaseRepresentation
bin11010011011101111100101
3111001001022202
4122123233211
53233220011
6404304245
7112620164
oct32335745
914031282
106929381
113a03168
1223a2085
131588034
14cc53db
1591d23b
hex69bbe5

6929381 has 2 divisors, whose sum is σ = 6929382. Its totient is φ = 6929380.

The previous prime is 6929359. The next prime is 6929401. The reversal of 6929381 is 1839296.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6806881 + 122500 = 2609^2 + 350^2 .

It is a cyclic number.

It is not a de Polignac number, because 6929381 - 26 = 6929317 is a prime.

It is a super-2 number, since 2×69293812 = 96032642086322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6929581) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3464690 + 3464691.

It is an arithmetic number, because the mean of its divisors is an integer number (3464691).

Almost surely, 26929381 is an apocalyptic number.

It is an amenable number.

6929381 is a deficient number, since it is larger than the sum of its proper divisors (1).

6929381 is an equidigital number, since it uses as much as digits as its factorization.

6929381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 38.

The square root of 6929381 is about 2632.3717442641. The cubic root of 6929381 is about 190.6476605149.

The spelling of 6929381 in words is "six million, nine hundred twenty-nine thousand, three hundred eighty-one".