489923807 has 2 divisors, whose sum is σ = 489923808. Its totient is φ = 489923806.

The previous prime is 489923773. The next prime is 489923809. The reversal of 489923807 is 708329984.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 489923807 - 2⁶ = 489923743 is a prime.

Together with 489923809, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489923809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244961903 + 244961904.

It is an arithmetic number, because the mean of its divisors is an integer number (244961904).

Almost surely, 2^489923807 is an apocalyptic number.

489923807 is a deficient number, since it is larger than the sum of its proper divisors (1).

489923807 is an equidigital number, since it uses as much as digits as its factorization.

489923807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 489923807 is about 22134.2225298292. Note that the first 3 decimals coincide. The cubic root of 489923807 is about 788.3326512377.

The spelling of 489923807 in words is "four hundred eighty-nine million, nine hundred twenty-three thousand, eight hundred seven".