489877823 has 2 divisors, whose sum is σ = 489877824. Its totient is φ = 489877822.

The previous prime is 489877819. The next prime is 489877847. The reversal of 489877823 is 328778984.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 489877823 - 2² = 489877819 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489874823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244938911 + 244938912.

It is an arithmetic number, because the mean of its divisors is an integer number (244938912).

Almost surely, 2^489877823 is an apocalyptic number.

489877823 is a deficient number, since it is larger than the sum of its proper divisors (1).

489877823 is an equidigital number, since it uses as much as digits as its factorization.

489877823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5419008, while the sum is 56.

The square root of 489877823 is about 22133.1837520046. The cubic root of 489877823 is about 788.3079862984.

The spelling of 489877823 in words is "four hundred eighty-nine million, eight hundred seventy-seven thousand, eight hundred twenty-three".