489774101 has 2 divisors, whose sum is σ = 489774102. Its totient is φ = 489774100.

The previous prime is 489774091. The next prime is 489774107. The reversal of 489774101 is 101477984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 423742225 + 66031876 = 20585^2 + 8126^2 .

It is a cyclic number.

It is not a de Polignac number, because 489774101 - 2⁶ = 489774037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (489774107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244887050 + 244887051.

It is an arithmetic number, because the mean of its divisors is an integer number (244887051).

Almost surely, 2^489774101 is an apocalyptic number.

It is an amenable number.

489774101 is a deficient number, since it is larger than the sum of its proper divisors (1).

489774101 is an equidigital number, since it uses as much as digits as its factorization.

489774101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 489774101 is about 22130.8404946581. The cubic root of 489774101 is about 788.2523461309.

The spelling of 489774101 in words is "four hundred eighty-nine million, seven hundred seventy-four thousand, one hundred one".