464519989 has 2 divisors, whose sum is σ = 464519990. Its totient is φ = 464519988.

The previous prime is 464519987. The next prime is 464520059. The reversal of 464519989 is 989915464.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 316484100 + 148035889 = 17790^2 + 12167^2 .

It is a cyclic number.

It is not a de Polignac number, because 464519989 - 2¹ = 464519987 is a prime.

Together with 464519987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (464519981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232259994 + 232259995.

It is an arithmetic number, because the mean of its divisors is an integer number (232259995).

Almost surely, 2^464519989 is an apocalyptic number.

It is an amenable number.

464519989 is a deficient number, since it is larger than the sum of its proper divisors (1).

464519989 is an equidigital number, since it uses as much as digits as its factorization.

464519989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2799360, while the sum is 55.

The square root of 464519989 is about 21552.7257904888. The cubic root of 464519989 is about 774.4644174710.

The spelling of 464519989 in words is "four hundred sixty-four million, five hundred nineteen thousand, nine hundred eighty-nine".