487091497 has 4 divisors (see below), whose sum is σ = 515743956. Its totient is φ = 458439040.

The previous prime is 487091491. The next prime is 487091509. The reversal of 487091497 is 794190784.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 150405696 + 336685801 = 12264^2 + 18349^2 .

It is a cyclic number.

It is not a de Polignac number, because 487091497 - 2³ = 487091489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 487091497.

It is not an unprimeable number, because it can be changed into a prime (487091491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14326204 + ... + 14326237.

It is an arithmetic number, because the mean of its divisors is an integer number (128935989).

Almost surely, 2^487091497 is an apocalyptic number.

It is an amenable number.

487091497 is a deficient number, since it is larger than the sum of its proper divisors (28652459).

487091497 is a wasteful number, since it uses less digits than its factorization.

487091497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28652458.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 487091497 is about 22070.1494557694. The cubic root of 487091497 is about 786.8105648818.

The spelling of 487091497 in words is "four hundred eighty-seven million, ninety-one thousand, four hundred ninety-seven".