491414887 has 6 divisors (see below), whose sum is σ = 500864672. Its totient is φ = 482140152.

The previous prime is 491414881. The next prime is 491414893. The reversal of 491414887 is 788414194.

It is an interprime number because it is at equal distance from previous prime (491414881) and next prime (491414893).

It is not a de Polignac number, because 491414887 - 2²³ = 483026279 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 (491414881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 84663 + ... + 90280.

Almost surely, 2^491414887 is an apocalyptic number.

491414887 is a deficient number, since it is larger than the sum of its proper divisors (9449785).

491414887 is an equidigital number, since it uses as much as digits as its factorization.

491414887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175049 (or 174996 counting only the distinct ones).

The product of its digits is 258048, while the sum is 46.

The square root of 491414887 is about 22167.8796234552. The cubic root of 491414887 is about 789.1316030585.

The spelling of 491414887 in words is "four hundred ninety-one million, four hundred fourteen thousand, eight hundred eighty-seven".