490149905 has 16 divisors (see below), whose sum is σ = 687840384. Its totient is φ = 328285440.

The previous prime is 490149901. The next prime is 490149917. The reversal of 490149905 is 509941094.

It is a happy number.

It is not a de Polignac number, because 490149905 - 2² = 490149901 is a prime.

It is not an unprimeable number, because it can be changed into a prime (490149901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161336 + ... + 164345.

It is an arithmetic number, because the mean of its divisors is an integer number (42990024).

Almost surely, 2^490149905 is an apocalyptic number.

It is an amenable number.

490149905 is a deficient number, since it is larger than the sum of its proper divisors (197690479).

490149905 is a wasteful number, since it uses less digits than its factorization.

490149905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325736.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 490149905 is about 22139.3293710537. The cubic root of 490149905 is about 788.4539034414.

The spelling of 490149905 in words is "four hundred ninety million, one hundred forty-nine thousand, nine hundred five".