494638090 has 16 divisors (see below), whose sum is σ = 892920672. Its totient is φ = 197283664.

The previous prime is 494638061. The next prime is 494638091. The reversal of 494638090 is 90836494.

It is not an unprimeable number, because it can be changed into a prime (494638091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67804 + ... + 74743.

It is an arithmetic number, because the mean of its divisors is an integer number (55807542).

Almost surely, 2^494638090 is an apocalyptic number.

494638090 is a deficient number, since it is larger than the sum of its proper divisors (398282582).

494638090 is a wasteful number, since it uses less digits than its factorization.

494638090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142901.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 494638090 is about 22240.4606517041. The cubic root of 494638090 is about 790.8531561791.

The spelling of 494638090 in words is "four hundred ninety-four million, six hundred thirty-eight thousand, ninety".