123577889 has 2 divisors, whose sum is σ = 123577890. Its totient is φ = 123577888.

The previous prime is 123577819. The next prime is 123577901. The reversal of 123577889 is 988775321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123099025 + 478864 = 11095^2 + 692^2 .

It is an emirp because it is prime and its reverse (988775321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123577889 - 2⁸ = 123577633 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (123577819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61788944 + 61788945.

It is an arithmetic number, because the mean of its divisors is an integer number (61788945).

Almost surely, 2^123577889 is an apocalyptic number.

It is an amenable number.

123577889 is a deficient number, since it is larger than the sum of its proper divisors (1).

123577889 is an equidigital number, since it uses as much as digits as its factorization.

123577889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 50.

The square root of 123577889 is about 11116.5592248681. The cubic root of 123577889 is about 498.0966154488.

The spelling of 123577889 in words is "one hundred twenty-three million, five hundred seventy-seven thousand, eight hundred eighty-nine".