487393813 has 2 divisors, whose sum is σ = 487393814. Its totient is φ = 487393812.

The previous prime is 487393801. The next prime is 487393817. The reversal of 487393813 is 318393784.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 446138884 + 41254929 = 21122^2 + 6423^2 .

It is a cyclic number.

It is not a de Polignac number, because 487393813 - 2¹³ = 487385621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (487393817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243696906 + 243696907.

It is an arithmetic number, because the mean of its divisors is an integer number (243696907).

Almost surely, 2^487393813 is an apocalyptic number.

It is an amenable number.

487393813 is a deficient number, since it is larger than the sum of its proper divisors (1).

487393813 is an equidigital number, since it uses as much as digits as its factorization.

487393813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 46.

The square root of 487393813 is about 22076.9973728313. The cubic root of 487393813 is about 786.9733106426.

The spelling of 487393813 in words is "four hundred eighty-seven million, three hundred ninety-three thousand, eight hundred thirteen".