489157423 has 2 divisors, whose sum is σ = 489157424. Its totient is φ = 489157422.

The previous prime is 489157421. The next prime is 489157433. The reversal of 489157423 is 324751984.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 489157423 - 2¹ = 489157421 is a prime.

Together with 489157421, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 489157423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489157421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244578711 + 244578712.

It is an arithmetic number, because the mean of its divisors is an integer number (244578712).

Almost surely, 2^489157423 is an apocalyptic number.

489157423 is a deficient number, since it is larger than the sum of its proper divisors (1).

489157423 is an equidigital number, since it uses as much as digits as its factorization.

489157423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 43.

The square root of 489157423 is about 22116.9035581385. The cubic root of 489157423 is about 787.9213758336.

The spelling of 489157423 in words is "four hundred eighty-nine million, one hundred fifty-seven thousand, four hundred twenty-three".