490651369 has 8 divisors (see below), whose sum is σ = 538364232. Its totient is φ = 444362880.

The previous prime is 490651367. The next prime is 490651379. The reversal of 490651369 is 963156094.

It can be written as a sum of positive squares in 4 ways, for example, as 141895744 + 348755625 = 11912^2 + 18675^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 490651369 - 2¹ = 490651367 is a prime.

It is a super-2 number, since 2×490651369² = 481477531803148322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490651367) 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, 355372 + ... + 356749.

It is an arithmetic number, because the mean of its divisors is an integer number (67295529).

Almost surely, 2^490651369 is an apocalyptic number.

It is an amenable number.

490651369 is a deficient number, since it is larger than the sum of its proper divisors (47712863).

490651369 is a wasteful number, since it uses less digits than its factorization.

490651369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712187.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 490651369 is about 22150.6516608428. The cubic root of 490651369 is about 788.7226963724.

The spelling of 490651369 in words is "four hundred ninety million, six hundred fifty-one thousand, three hundred sixty-nine".