490397101 has 2 divisors, whose sum is σ = 490397102. Its totient is φ = 490397100.

The previous prime is 490397057. The next prime is 490397183. The reversal of 490397101 is 101793094.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 489559876 + 837225 = 22126^2 + 915^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-490397101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490397701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245198550 + 245198551.

It is an arithmetic number, because the mean of its divisors is an integer number (245198551).

Almost surely, 2^490397101 is an apocalyptic number.

It is an amenable number.

490397101 is a deficient number, since it is larger than the sum of its proper divisors (1).

490397101 is an equidigital number, since it uses as much as digits as its factorization.

490397101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 490397101 is about 22144.9114019451. The cubic root of 490397101 is about 788.5864274532.

The spelling of 490397101 in words is "four hundred ninety million, three hundred ninety-seven thousand, one hundred one".