488251909 has 2 divisors, whose sum is σ = 488251910. Its totient is φ = 488251908.

The previous prime is 488251867. The next prime is 488251913. The reversal of 488251909 is 909152884.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 486864225 + 1387684 = 22065^2 + 1178^2 .

It is a cyclic number.

It is not a de Polignac number, because 488251909 - 2⁹ = 488251397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (488251919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244125954 + 244125955.

It is an arithmetic number, because the mean of its divisors is an integer number (244125955).

Almost surely, 2^488251909 is an apocalyptic number.

It is an amenable number.

488251909 is a deficient number, since it is larger than the sum of its proper divisors (1).

488251909 is an equidigital number, since it uses as much as digits as its factorization.

488251909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 488251909 is about 22096.4229910635. The cubic root of 488251909 is about 787.4348831351.

The spelling of 488251909 in words is "four hundred eighty-eight million, two hundred fifty-one thousand, nine hundred nine".