123907489 has 2 divisors, whose sum is σ = 123907490. Its totient is φ = 123907488.

The previous prime is 123907477. The next prime is 123907513. The reversal of 123907489 is 984709321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117353889 + 6553600 = 10833^2 + 2560^2 .

It is a cyclic number.

It is not a de Polignac number, because 123907489 - 2²⁵ = 90353057 is a prime.

It is not a weakly prime, because it can be changed into another prime (123907789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61953744 + 61953745.

It is an arithmetic number, because the mean of its divisors is an integer number (61953745).

Almost surely, 2^123907489 is an apocalyptic number.

It is an amenable number.

123907489 is a deficient number, since it is larger than the sum of its proper divisors (1).

123907489 is an equidigital number, since it uses as much as digits as its factorization.

123907489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 123907489 is about 11131.3740840922. The cubic root of 123907489 is about 498.5390540984.

The spelling of 123907489 in words is "one hundred twenty-three million, nine hundred seven thousand, four hundred eighty-nine".