490349987 has 2 divisors, whose sum is σ = 490349988. Its totient is φ = 490349986.

The previous prime is 490349983. The next prime is 490349999. The reversal of 490349987 is 789943094.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 490349987 - 2² = 490349983 is a prime.

It is not a weakly prime, because it can be changed into another prime (490349983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245174993 + 245174994.

It is an arithmetic number, because the mean of its divisors is an integer number (245174994).

Almost surely, 2^490349987 is an apocalyptic number.

490349987 is a deficient number, since it is larger than the sum of its proper divisors (1).

490349987 is an equidigital number, since it uses as much as digits as its factorization.

490349987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The square root of 490349987 is about 22143.8476105667. The cubic root of 490349987 is about 788.5611726473.

The spelling of 490349987 in words is "four hundred ninety million, three hundred forty-nine thousand, nine hundred eighty-seven".