123489577 has 2 divisors, whose sum is σ = 123489578. Its totient is φ = 123489576.

The previous prime is 123489563. The next prime is 123489623. The reversal of 123489577 is 775984321.

It is an a-pointer prime, because the next prime (123489623) can be obtained adding 123489577 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122677776 + 811801 = 11076^2 + 901^2 .

It is a cyclic number.

It is not a de Polignac number, because 123489577 - 2¹⁹ = 122965289 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123489517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61744788 + 61744789.

It is an arithmetic number, because the mean of its divisors is an integer number (61744789).

Almost surely, 2^123489577 is an apocalyptic number.

It is an amenable number.

123489577 is a deficient number, since it is larger than the sum of its proper divisors (1).

123489577 is an equidigital number, since it uses as much as digits as its factorization.

123489577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 46.

The square root of 123489577 is about 11112.5864226111. The cubic root of 123489577 is about 497.9779362063.

The spelling of 123489577 in words is "one hundred twenty-three million, four hundred eighty-nine thousand, five hundred seventy-seven".