489955803787 has 4 divisors (see below), whose sum is σ = 503197852576. Its totient is φ = 476713755000.

The previous prime is 489955803767. The next prime is 489955803791. The reversal of 489955803787 is 787308559984.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489955803787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489955803767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6621024339 + ... + 6621024412.

It is an arithmetic number, because the mean of its divisors is an integer number (125799463144).

Almost surely, 2^489955803787 is an apocalyptic number.

489955803787 is a deficient number, since it is larger than the sum of its proper divisors (13242048789).

489955803787 is a wasteful number, since it uses less digits than its factorization.

489955803787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13242048788.

The product of its (nonzero) digits is 609638400, while the sum is 73.

The spelling of 489955803787 in words is "four hundred eighty-nine billion, nine hundred fifty-five million, eight hundred three thousand, seven hundred eighty-seven".