491387376 has 20 divisors (see below), whose sum is σ = 1269417512. Its totient is φ = 163795776.

The previous prime is 491387357. The next prime is 491387381. The reversal of 491387376 is 673783194.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 10237237 = 491387376 / (4 + 9 + 1 + 3 + 8 + 7 + 3 + 7 + 6).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5118571 + ... + 5118666.

Almost surely, 2^491387376 is an apocalyptic number.

It is an amenable number.

491387376 is an abundant number, since it is smaller than the sum of its proper divisors (778030136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491387376 is a wasteful number, since it uses less digits than its factorization.

491387376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10237248 (or 10237242 counting only the distinct ones).

The product of its digits is 762048, while the sum is 48.

The square root of 491387376 is about 22167.2590998526. The cubic root of 491387376 is about 789.1168767344.

The spelling of 491387376 in words is "four hundred ninety-one million, three hundred eighty-seven thousand, three hundred seventy-six".