993531047 has 2 divisors, whose sum is σ = 993531048. Its totient is φ = 993531046.

The previous prime is 993531013. The next prime is 993531053. The reversal of 993531047 is 740135399.

993531047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 993531047 - 2²⁴ = 976753831 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 993530995 and 993531013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993531347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496765523 + 496765524.

It is an arithmetic number, because the mean of its divisors is an integer number (496765524).

Almost surely, 2^993531047 is an apocalyptic number.

993531047 is a deficient number, since it is larger than the sum of its proper divisors (1).

993531047 is an equidigital number, since it uses as much as digits as its factorization.

993531047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 993531047 is about 31520.3275205065. The cubic root of 993531047 is about 997.8390158446.

The spelling of 993531047 in words is "nine hundred ninety-three million, five hundred thirty-one thousand, forty-seven".