487983905 has 4 divisors (see below), whose sum is σ = 585580692. Its totient is φ = 390387120.

The previous prime is 487983863. The next prime is 487983907. The reversal of 487983905 is 509389784.

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 364351744 + 123632161 = 19088^2 + 11119^2 .

It is not a de Polignac number, because 487983905 - 2¹⁶ = 487918369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (487983907) 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, 48798386 + ... + 48798395.

It is an arithmetic number, because the mean of its divisors is an integer number (146395173).

Almost surely, 2^487983905 is an apocalyptic number.

It is an amenable number.

487983905 is a deficient number, since it is larger than the sum of its proper divisors (97596787).

487983905 is an equidigital number, since it uses as much as digits as its factorization.

487983905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97596786.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The square root of 487983905 is about 22090.3577381626. The cubic root of 487983905 is about 787.2907810714.

The spelling of 487983905 in words is "four hundred eighty-seven million, nine hundred eighty-three thousand, nine hundred five".