490235686 has 4 divisors (see below), whose sum is σ = 735353532. Its totient is φ = 245117842.

The previous prime is 490235671. The next prime is 490235687. The reversal of 490235686 is 686532094.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 686532094 = 2 ⋅343266047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490235687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122558920 + ... + 122558923.

It is an arithmetic number, because the mean of its divisors is an integer number (183838383).

Almost surely, 2^490235686 is an apocalyptic number.

490235686 is a deficient number, since it is larger than the sum of its proper divisors (245117846).

490235686 is a wasteful number, since it uses less digits than its factorization.

490235686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245117845.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 490235686 is about 22141.2665852701. The cubic root of 490235686 is about 788.4998964586.

The spelling of 490235686 in words is "four hundred ninety million, two hundred thirty-five thousand, six hundred eighty-six".