477428509 has 2 divisors, whose sum is σ = 477428510. Its totient is φ = 477428508.

The previous prime is 477428473. The next prime is 477428519. The reversal of 477428509 is 905824774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 312228900 + 165199609 = 17670^2 + 12853^2 .

It is a cyclic number.

It is not a de Polignac number, because 477428509 - 2¹⁹ = 476904221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (477428519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238714254 + 238714255.

It is an arithmetic number, because the mean of its divisors is an integer number (238714255).

Almost surely, 2^477428509 is an apocalyptic number.

It is an amenable number.

477428509 is a deficient number, since it is larger than the sum of its proper divisors (1).

477428509 is an equidigital number, since it uses as much as digits as its factorization.

477428509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 477428509 is about 21850.1375052882. The cubic root of 477428509 is about 781.5728229687.

The spelling of 477428509 in words is "four hundred seventy-seven million, four hundred twenty-eight thousand, five hundred nine".