491897466 has 12 divisors (see below), whose sum is σ = 1065777882. Its totient is φ = 163965816.

The previous prime is 491897453. The next prime is 491897503. The reversal of 491897466 is 664798194.

491897466 is a `hidden beast` number, since 4 + 91 + 8 + 97 + 466 = 666.

It can be written as a sum of positive squares in only one way, i.e., 379431441 + 112466025 = 19479^2 + 10605^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13663801 + ... + 13663836.

Almost surely, 2^491897466 is an apocalyptic number.

491897466 is an abundant number, since it is smaller than the sum of its proper divisors (573880416).

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

491897466 is a wasteful number, since it uses less digits than its factorization.

491897466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27327645 (or 27327642 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 491897466 is about 22178.7615975284. The cubic root of 491897466 is about 789.3898327546.

The spelling of 491897466 in words is "four hundred ninety-one million, eight hundred ninety-seven thousand, four hundred sixty-six".