491705477 has 8 divisors (see below), whose sum is σ = 529635840. Its totient is φ = 455154480.

The previous prime is 491705453. The next prime is 491705479. The reversal of 491705477 is 774507194.

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

It is a cyclic number.

It is not a de Polignac number, because 491705477 - 2²² = 487511173 is a prime.

It is a super-2 number, since 2×491705477² = 483548552223595058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491705479) 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, 344102 + ... + 345527.

It is an arithmetic number, because the mean of its divisors is an integer number (66204480).

Almost surely, 2^491705477 is an apocalyptic number.

It is an amenable number.

491705477 is a deficient number, since it is larger than the sum of its proper divisors (37930363).

491705477 is a wasteful number, since it uses less digits than its factorization.

491705477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689683.

The product of its (nonzero) digits is 246960, while the sum is 44.

The square root of 491705477 is about 22174.4329578007. The cubic root of 491705477 is about 789.2871190140.

The spelling of 491705477 in words is "four hundred ninety-one million, seven hundred five thousand, four hundred seventy-seven".