489123907 has 2 divisors, whose sum is σ = 489123908. Its totient is φ = 489123906.

The previous prime is 489123853. The next prime is 489123931. The reversal of 489123907 is 709321984.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489123907 is a prime.

It is not a weakly prime, because it can be changed into another prime (489123977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244561953 + 244561954.

It is an arithmetic number, because the mean of its divisors is an integer number (244561954).

Almost surely, 2^489123907 is an apocalyptic number.

489123907 is a deficient number, since it is larger than the sum of its proper divisors (1).

489123907 is an equidigital number, since it uses as much as digits as its factorization.

489123907 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 489123907 is about 22116.1458441565. The cubic root of 489123907 is about 787.9033798710.

The spelling of 489123907 in words is "four hundred eighty-nine million, one hundred twenty-three thousand, nine hundred seven".