947503493 has 2 divisors, whose sum is σ = 947503494. Its totient is φ = 947503492.

The previous prime is 947503463. The next prime is 947503507. The reversal of 947503493 is 394305749.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 577056484 + 370447009 = 24022^2 + 19247^2 .

It is an emirp because it is prime and its reverse (394305749) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 947503493 - 2⁶ = 947503429 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 (947503463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473751746 + 473751747.

It is an arithmetic number, because the mean of its divisors is an integer number (473751747).

Almost surely, 2^947503493 is an apocalyptic number.

It is an amenable number.

947503493 is a deficient number, since it is larger than the sum of its proper divisors (1).

947503493 is an equidigital number, since it uses as much as digits as its factorization.

947503493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 44.

The square root of 947503493 is about 30781.5446818382. The cubic root of 947503493 is about 982.1856994824.

The spelling of 947503493 in words is "nine hundred forty-seven million, five hundred three thousand, four hundred ninety-three".