489787939 has 2 divisors, whose sum is σ = 489787940. Its totient is φ = 489787938.

The previous prime is 489787933. The next prime is 489787943. The reversal of 489787939 is 939787984.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 489787939 - 2⁹ = 489787427 is a prime.

It is not a weakly prime, because it can be changed into another prime (489787933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244893969 + 244893970.

It is an arithmetic number, because the mean of its divisors is an integer number (244893970).

Almost surely, 2^489787939 is an apocalyptic number.

489787939 is a deficient number, since it is larger than the sum of its proper divisors (1).

489787939 is an equidigital number, since it uses as much as digits as its factorization.

489787939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27433728, while the sum is 64.

The square root of 489787939 is about 22131.1531330837. The cubic root of 489787939 is about 788.2597697801.

The spelling of 489787939 in words is "four hundred eighty-nine million, seven hundred eighty-seven thousand, nine hundred thirty-nine".