477914989 has 2 divisors, whose sum is σ = 477914990. Its totient is φ = 477914988.

The previous prime is 477914929. The next prime is 477914993. The reversal of 477914989 is 989419774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 378613764 + 99301225 = 19458^2 + 9965^2 .

It is a cyclic number.

It is not a de Polignac number, because 477914989 - 2⁹ = 477914477 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (477914929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 238957494 + 238957495.

It is an arithmetic number, because the mean of its divisors is an integer number (238957495).

Almost surely, 2^477914989 is an apocalyptic number.

It is an amenable number.

477914989 is a deficient number, since it is larger than the sum of its proper divisors (1).

477914989 is an equidigital number, since it uses as much as digits as its factorization.

477914989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 58.

The square root of 477914989 is about 21861.2668663095. The cubic root of 477914989 is about 781.8381963668.

The spelling of 477914989 in words is "four hundred seventy-seven million, nine hundred fourteen thousand, nine hundred eighty-nine".