993212287 has 2 divisors, whose sum is σ = 993212288. Its totient is φ = 993212286.

The previous prime is 993212281. The next prime is 993212303. The reversal of 993212287 is 782212399.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 993212287 - 2¹⁹ = 992687999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993212281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496606143 + 496606144.

It is an arithmetic number, because the mean of its divisors is an integer number (496606144).

Almost surely, 2^993212287 is an apocalyptic number.

993212287 is a deficient number, since it is larger than the sum of its proper divisors (1).

993212287 is an equidigital number, since it uses as much as digits as its factorization.

993212287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The square root of 993212287 is about 31515.2706953312. The cubic root of 993212287 is about 997.7322903803.

The spelling of 993212287 in words is "nine hundred ninety-three million, two hundred twelve thousand, two hundred eighty-seven".