47297993 has 2 divisors, whose sum is σ = 47297994. Its totient is φ = 47297992.

The previous prime is 47297989. The next prime is 47298037. The reversal of 47297993 is 39979274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28174864 + 19123129 = 5308^2 + 4373^2 .

It is a cyclic number.

It is not a de Polignac number, because 47297993 - 2² = 47297989 is a prime.

It is not a weakly prime, because it can be changed into another prime (47297923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23648996 + 23648997.

It is an arithmetic number, because the mean of its divisors is an integer number (23648997).

Almost surely, 2^47297993 is an apocalyptic number.

It is an amenable number.

47297993 is a deficient number, since it is larger than the sum of its proper divisors (1).

47297993 is an equidigital number, since it uses as much as digits as its factorization.

47297993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 50.

The square root of 47297993 is about 6877.3536334843. The cubic root of 47297993 is about 361.6437002790.

The spelling of 47297993 in words is "forty-seven million, two hundred ninety-seven thousand, nine hundred ninety-three".