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47279 is a prime number
BaseRepresentation
bin1011100010101111
32101212002
423202233
53003104
61002515
7254561
oct134257
971762
1047279
1132581
122343b
131869b
1413331
15e01e
hexb8af

47279 has 2 divisors, whose sum is σ = 47280. Its totient is φ = 47278.

The previous prime is 47269. The next prime is 47287. The reversal of 47279 is 97274.

47279 is nontrivially palindromic in base 14.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-47279 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an Ulam number.

It is a pancake number, because a pancake can be divided into 47279 parts by 307 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47269) 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, 23639 + 23640.

It is an arithmetic number, because the mean of its divisors is an integer number (23640).

247279 is an apocalyptic number.

47279 is a deficient number, since it is larger than the sum of its proper divisors (1).

47279 is an equidigital number, since it uses as much as digits as its factorization.

47279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3528, while the sum is 29.

The square root of 47279 is about 217.4373472980. The cubic root of 47279 is about 36.1595286538.

The spelling of 47279 in words is "forty-seven thousand, two hundred seventy-nine".