47271709 has 2 divisors, whose sum is σ = 47271710. Its totient is φ = 47271708.

The previous prime is 47271703. The next prime is 47271751. The reversal of 47271709 is 90717274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47265625 + 6084 = 6875^2 + 78^2 .

It is a cyclic number.

It is not a de Polignac number, because 47271709 - 2⁹ = 47271197 is a prime.

It is a super-2 number, since 2×47271709² = 4469228943561362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47271703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23635854 + 23635855.

It is an arithmetic number, because the mean of its divisors is an integer number (23635855).

Almost surely, 2^47271709 is an apocalyptic number.

It is an amenable number.

47271709 is a deficient number, since it is larger than the sum of its proper divisors (1).

47271709 is an equidigital number, since it uses as much as digits as its factorization.

47271709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24696, while the sum is 37.

The square root of 47271709 is about 6875.4424584895. The cubic root of 47271709 is about 361.5766981103.

The spelling of 47271709 in words is "forty-seven million, two hundred seventy-one thousand, seven hundred nine".