477980969 has 2 divisors, whose sum is σ = 477980970. Its totient is φ = 477980968.

The previous prime is 477980957. The next prime is 477981001. The reversal of 477980969 is 969089774.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 303212569 + 174768400 = 17413^2 + 13220^2 .

It is a cyclic number.

It is not a de Polignac number, because 477980969 - 2¹⁶ = 477915433 is a prime.

It is a super-2 number, since 2×477980969² = 456931613452357922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (477980869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238990484 + 238990485.

It is an arithmetic number, because the mean of its divisors is an integer number (238990485).

Almost surely, 2^477980969 is an apocalyptic number.

It is an amenable number.

477980969 is a deficient number, since it is larger than the sum of its proper divisors (1).

477980969 is an equidigital number, since it uses as much as digits as its factorization.

477980969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6858432, while the sum is 59.

The square root of 477980969 is about 21862.7758759038. The cubic root of 477980969 is about 781.8741743905.

The spelling of 477980969 in words is "four hundred seventy-seven million, nine hundred eighty thousand, nine hundred sixty-nine".