489156457 has 2 divisors, whose sum is σ = 489156458. Its totient is φ = 489156456.

The previous prime is 489156443. The next prime is 489156461. The reversal of 489156457 is 754651984.

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., 368793616 + 120362841 = 19204^2 + 10971^2 .

It is a cyclic number.

It is not a de Polignac number, because 489156457 - 2⁷ = 489156329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 489156457.

It is not a weakly prime, because it can be changed into another prime (489156407) 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, 244578228 + 244578229.

It is an arithmetic number, because the mean of its divisors is an integer number (244578229).

Almost surely, 2^489156457 is an apocalyptic number.

It is an amenable number.

489156457 is a deficient number, since it is larger than the sum of its proper divisors (1).

489156457 is an equidigital number, since it uses as much as digits as its factorization.

489156457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 49.

The square root of 489156457 is about 22116.8817196277. The cubic root of 489156457 is about 787.9208571645.

The spelling of 489156457 in words is "four hundred eighty-nine million, one hundred fifty-six thousand, four hundred fifty-seven".