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14907721 is a prime number
BaseRepresentation
bin111000110111…
…100101001001
31001001101112211
4320313211021
512304021341
61251305121
7240466513
oct70674511
931041484
1014907721
118462434
124bab1a1
13311c64a
141da0bb3
151497181
hexe37949

14907721 has 2 divisors, whose sum is σ = 14907722. Its totient is φ = 14907720.

The previous prime is 14907719. The next prime is 14907727. The reversal of 14907721 is 12770941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14907321 + 400 = 3861^2 + 20^2 .

It is a cyclic number.

It is not a de Polignac number, because 14907721 - 21 = 14907719 is a prime.

Together with 14907719, it forms a pair of twin primes.

It is equal to p965155 and since 14907721 and 965155 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (14907727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7453860 + 7453861.

It is an arithmetic number, because the mean of its divisors is an integer number (7453861).

Almost surely, 214907721 is an apocalyptic number.

It is an amenable number.

14907721 is a deficient number, since it is larger than the sum of its proper divisors (1).

14907721 is an equidigital number, since it uses as much as digits as its factorization.

14907721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 14907721 is about 3861.0517997043. The cubic root of 14907721 is about 246.1144343877.

The spelling of 14907721 in words is "fourteen million, nine hundred seven thousand, seven hundred twenty-one".