487977983 has 4 divisors (see below), whose sum is σ = 504804840. Its totient is φ = 471151128.

The previous prime is 487977977. The next prime is 487978003. The reversal of 487977983 is 389779784.

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

It is a cyclic number.

It is not a de Polignac number, because 487977983 - 2¹² = 487973887 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 (487977583) 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, 8413385 + ... + 8413442.

It is an arithmetic number, because the mean of its divisors is an integer number (126201210).

Almost surely, 2^487977983 is an apocalyptic number.

487977983 is a deficient number, since it is larger than the sum of its proper divisors (16826857).

487977983 is a wasteful number, since it uses less digits than its factorization.

487977983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16826856.

The product of its digits is 21337344, while the sum is 62.

The square root of 487977983 is about 22090.2236973735. The cubic root of 487977983 is about 787.2875962978.

The spelling of 487977983 in words is "four hundred eighty-seven million, nine hundred seventy-seven thousand, nine hundred eighty-three".