487910991 has 8 divisors (see below), whose sum is σ = 651057840. Its totient is φ = 325019072.

The previous prime is 487910987. The next prime is 487911037. The reversal of 487910991 is 199019784.

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 487910991 - 2² = 487910987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 487910991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487910911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59220 + ... + 66953.

It is an arithmetic number, because the mean of its divisors is an integer number (81382230).

Almost surely, 2^487910991 is an apocalyptic number.

487910991 is a deficient number, since it is larger than the sum of its proper divisors (163146849).

487910991 is a wasteful number, since it uses less digits than its factorization.

487910991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127465.

The product of its (nonzero) digits is 163296, while the sum is 48.

The square root of 487910991 is about 22088.7073184467. The cubic root of 487910991 is about 787.2515670873.

The spelling of 487910991 in words is "four hundred eighty-seven million, nine hundred ten thousand, nine hundred ninety-one".