487040669 has 4 divisors (see below), whose sum is σ = 487122300. Its totient is φ = 486959040.

The previous prime is 487040629. The next prime is 487040677. The reversal of 487040669 is 966040784.

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 217916644 + 269124025 = 14762^2 + 16405^2 .

It is a cyclic number.

It is not a de Polignac number, because 487040669 - 2¹² = 487036573 is a prime.

It is a super-2 number, since 2×487040669² = 474417226519935122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487040629) 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, 31094 + ... + 44055.

It is an arithmetic number, because the mean of its divisors is an integer number (121780575).

Almost surely, 2^487040669 is an apocalyptic number.

It is an amenable number.

487040669 is a deficient number, since it is larger than the sum of its proper divisors (81631).

487040669 is an equidigital number, since it uses as much as digits as its factorization.

487040669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81630.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 487040669 is about 22068.9979156282. The cubic root of 487040669 is about 786.7831960344.

The spelling of 487040669 in words is "four hundred eighty-seven million, forty thousand, six hundred sixty-nine".