489194777 has 2 divisors, whose sum is σ = 489194778. Its totient is φ = 489194776.

The previous prime is 489194773. The next prime is 489194803. The reversal of 489194777 is 777491984.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 486820096 + 2374681 = 22064^2 + 1541^2 .

It is a cyclic number.

It is not a de Polignac number, because 489194777 - 2² = 489194773 is a prime.

It is not a weakly prime, because it can be changed into another prime (489194773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244597388 + 244597389.

It is an arithmetic number, because the mean of its divisors is an integer number (244597389).

Almost surely, 2^489194777 is an apocalyptic number.

It is an amenable number.

489194777 is a deficient number, since it is larger than the sum of its proper divisors (1).

489194777 is an equidigital number, since it uses as much as digits as its factorization.

489194777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3556224, while the sum is 56.

The square root of 489194777 is about 22117.7480092346. The cubic root of 489194777 is about 787.9414315897.

The spelling of 489194777 in words is "four hundred eighty-nine million, one hundred ninety-four thousand, seven hundred seventy-seven".