247994933 has 2 divisors, whose sum is σ = 247994934. Its totient is φ = 247994932.

The previous prime is 247994927. The next prime is 247995017. The reversal of 247994933 is 339499742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155700484 + 92294449 = 12478^2 + 9607^2 .

It is a cyclic number.

It is not a de Polignac number, because 247994933 - 2⁴ = 247994917 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247996933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123997466 + 123997467.

It is an arithmetic number, because the mean of its divisors is an integer number (123997467).

Almost surely, 2^247994933 is an apocalyptic number.

It is an amenable number.

247994933 is a deficient number, since it is larger than the sum of its proper divisors (1).

247994933 is an equidigital number, since it uses as much as digits as its factorization.

247994933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 50.

The square root of 247994933 is about 15747.8548697910. The cubic root of 247994933 is about 628.2718515847.

The spelling of 247994933 in words is "two hundred forty-seven million, nine hundred ninety-four thousand, nine hundred thirty-three".