488687669 has 4 divisors (see below), whose sum is σ = 488864940. Its totient is φ = 488510400.

The previous prime is 488687659. The next prime is 488687681. The reversal of 488687669 is 966786884.

It is a happy number.

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 244140625 + 244547044 = 15625^2 + 15638^2 .

It is a cyclic number.

It is not a de Polignac number, because 488687669 - 2⁸ = 488687413 is a prime.

It is a super-2 number, since 2×488687669² = 477631275665307122, 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 (488687609) 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, 84434 + ... + 90035.

It is an arithmetic number, because the mean of its divisors is an integer number (122216235).

Almost surely, 2^488687669 is an apocalyptic number.

It is an amenable number.

488687669 is a deficient number, since it is larger than the sum of its proper divisors (177271).

488687669 is a wasteful number, since it uses less digits than its factorization.

488687669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177270.

The product of its digits is 27869184, while the sum is 62.

The square root of 488687669 is about 22106.2812114566. The cubic root of 488687669 is about 787.6690727601.

The spelling of 488687669 in words is "four hundred eighty-eight million, six hundred eighty-seven thousand, six hundred sixty-nine".