47615993 has 2 divisors, whose sum is σ = 47615994. Its totient is φ = 47615992.

The previous prime is 47615977. The next prime is 47616013. The reversal of 47615993 is 39951674.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33500944 + 14115049 = 5788^2 + 3757^2 .

It is a cyclic number.

It is not a de Polignac number, because 47615993 - 2⁴ = 47615977 is a prime.

It is not a weakly prime, because it can be changed into another prime (47615903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23807996 + 23807997.

It is an arithmetic number, because the mean of its divisors is an integer number (23807997).

Almost surely, 2^47615993 is an apocalyptic number.

It is an amenable number.

47615993 is a deficient number, since it is larger than the sum of its proper divisors (1).

47615993 is an equidigital number, since it uses as much as digits as its factorization.

47615993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 44.

The square root of 47615993 is about 6900.4342616969. The cubic root of 47615993 is about 362.4523739254.

The spelling of 47615993 in words is "forty-seven million, six hundred fifteen thousand, nine hundred ninety-three".