490550121 has 8 divisors (see below), whose sum is σ = 726740960. Its totient is φ = 327033396.

The previous prime is 490550087. The next prime is 490550153. The reversal of 490550121 is 121055094.

490550121 is a `hidden beast` number, since 4 + 90 + 550 + 1 + 21 = 666.

It is not a de Polignac number, because 490550121 - 2⁶ = 490550057 is a prime.

It is a super-2 number, since 2×490550121² = 481278842426229282, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 18168523 = 490550121 / (4 + 9 + 0 + 5 + 5 + 0 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490550191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9084235 + ... + 9084288.

It is an arithmetic number, because the mean of its divisors is an integer number (90842620).

Almost surely, 2^490550121 is an apocalyptic number.

It is an amenable number.

490550121 is a deficient number, since it is larger than the sum of its proper divisors (236190839).

490550121 is a wasteful number, since it uses less digits than its factorization.

490550121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18168532 (or 18168526 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 490550121 is about 22148.3661022659. The cubic root of 490550121 is about 788.6684405443.

The spelling of 490550121 in words is "four hundred ninety million, five hundred fifty thousand, one hundred twenty-one".