487309973 has 2 divisors, whose sum is σ = 487309974. Its totient is φ = 487309972.

The previous prime is 487309903. The next prime is 487310009. The reversal of 487309973 is 379903784.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 287879089 + 199430884 = 16967^2 + 14122^2 .

It is a cyclic number.

It is not a de Polignac number, because 487309973 - 2¹⁰ = 487308949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (487309903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243654986 + 243654987.

It is an arithmetic number, because the mean of its divisors is an integer number (243654987).

Almost surely, 2^487309973 is an apocalyptic number.

It is an amenable number.

487309973 is a deficient number, since it is larger than the sum of its proper divisors (1).

487309973 is an equidigital number, since it uses as much as digits as its factorization.

487309973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 50.

The square root of 487309973 is about 22075.0984822265. The cubic root of 487309973 is about 786.9281838039.

The spelling of 487309973 in words is "four hundred eighty-seven million, three hundred nine thousand, nine hundred seventy-three".