487919785 has 16 divisors (see below), whose sum is σ = 596403792. Its totient is φ = 383097600.

The previous prime is 487919779. The next prime is 487919813. The reversal of 487919785 is 587919784.

It can be written as a sum of positive squares in 8 ways, for example, as 153066384 + 334853401 = 12372^2 + 18299^2 .

It is not a de Polignac number, because 487919785 - 2⁷ = 487919657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163527 + ... + 166483.

It is an arithmetic number, because the mean of its divisors is an integer number (37275237).

Almost surely, 2^487919785 is an apocalyptic number.

It is an amenable number.

487919785 is a deficient number, since it is larger than the sum of its proper divisors (108484007).

487919785 is a wasteful number, since it uses less digits than its factorization.

487919785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3564.

The product of its digits is 5080320, while the sum is 58.

The square root of 487919785 is about 22088.9063785421. The cubic root of 487919785 is about 787.2562968083.

Subtracting 487919785 from its reverse (587919784), we obtain a palindrome (99999999).

The spelling of 487919785 in words is "four hundred eighty-seven million, nine hundred nineteen thousand, seven hundred eighty-five".