489940097 has 2 divisors, whose sum is σ = 489940098. Its totient is φ = 489940096.

The previous prime is 489940069. The next prime is 489940127. The reversal of 489940097 is 790049984.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 431019121 + 58920976 = 20761^2 + 7676^2 .

It is a cyclic number.

It is not a de Polignac number, because 489940097 - 2²⁰ = 488891521 is a prime.

It is not a weakly prime, because it can be changed into another prime (489940397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244970048 + 244970049.

It is an arithmetic number, because the mean of its divisors is an integer number (244970049).

Almost surely, 2^489940097 is an apocalyptic number.

It is an amenable number.

489940097 is a deficient number, since it is larger than the sum of its proper divisors (1).

489940097 is an equidigital number, since it uses as much as digits as its factorization.

489940097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 489940097 is about 22134.5905089749. The cubic root of 489940097 is about 788.3413885123.

The spelling of 489940097 in words is "four hundred eighty-nine million, nine hundred forty thousand, ninety-seven".