47387017 has 2 divisors, whose sum is σ = 47387018. Its totient is φ = 47387016.

The previous prime is 47387009. The next prime is 47387029. The reversal of 47387017 is 71078374.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29713401 + 17673616 = 5451^2 + 4204^2 .

It is a cyclic number.

It is not a de Polignac number, because 47387017 - 2³ = 47387009 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47387117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23693508 + 23693509.

It is an arithmetic number, because the mean of its divisors is an integer number (23693509).

Almost surely, 2^47387017 is an apocalyptic number.

It is an amenable number.

47387017 is a deficient number, since it is larger than the sum of its proper divisors (1).

47387017 is an equidigital number, since it uses as much as digits as its factorization.

47387017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 47387017 is about 6883.8228478077. The cubic root of 47387017 is about 361.8704526122.

The spelling of 47387017 in words is "forty-seven million, three hundred eighty-seven thousand, seventeen".