490949839 has 2 divisors, whose sum is σ = 490949840. Its totient is φ = 490949838.

The previous prime is 490949801. The next prime is 490949909. The reversal of 490949839 is 938949094.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 490949839 - 2¹⁵ = 490917071 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 490949839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490949939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245474919 + 245474920.

It is an arithmetic number, because the mean of its divisors is an integer number (245474920).

Almost surely, 2^490949839 is an apocalyptic number.

490949839 is a deficient number, since it is larger than the sum of its proper divisors (1).

490949839 is an equidigital number, since it uses as much as digits as its factorization.

490949839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2519424, while the sum is 55.

The square root of 490949839 is about 22157.3879101306. The cubic root of 490949839 is about 788.8825942550.

The spelling of 490949839 in words is "four hundred ninety million, nine hundred forty-nine thousand, eight hundred thirty-nine".