491083487 has 8 divisors (see below), whose sum is σ = 495209136. Its totient is φ = 486965952.

The previous prime is 491083469. The next prime is 491083543. The reversal of 491083487 is 784380194.

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

It is not a de Polignac number, because 491083487 - 2⁸ = 491083231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491083387) 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, 197828 + ... + 200294.

It is an arithmetic number, because the mean of its divisors is an integer number (61901142).

Almost surely, 2^491083487 is an apocalyptic number.

491083487 is a deficient number, since it is larger than the sum of its proper divisors (4125649).

491083487 is a wasteful number, since it uses less digits than its factorization.

491083487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4057.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 491083487 is about 22160.4035838700. The cubic root of 491083487 is about 788.9541718426.

The spelling of 491083487 in words is "four hundred ninety-one million, eighty-three thousand, four hundred eighty-seven".