463684889 has 2 divisors, whose sum is σ = 463684890. Its totient is φ = 463684888.

The previous prime is 463684861. The next prime is 463684901. The reversal of 463684889 is 988486364.

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., 401401225 + 62283664 = 20035^2 + 7892^2 .

It is a cyclic number.

It is not a de Polignac number, because 463684889 - 2²⁰ = 462636313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (463684489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 231842444 + 231842445.

It is an arithmetic number, because the mean of its divisors is an integer number (231842445).

Almost surely, 2^463684889 is an apocalyptic number.

It is an amenable number.

463684889 is a deficient number, since it is larger than the sum of its proper divisors (1).

463684889 is an equidigital number, since it uses as much as digits as its factorization.

463684889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7962624, while the sum is 56.

The square root of 463684889 is about 21533.3436558283. The cubic root of 463684889 is about 774.0000361668. Note that the first 4 decimals are identical.

The spelling of 463684889 in words is "four hundred sixty-three million, six hundred eighty-four thousand, eight hundred eighty-nine".