488649221 has 4 divisors (see below), whose sum is σ = 489060012. Its totient is φ = 488238432.

The previous prime is 488649179. The next prime is 488649229. The reversal of 488649221 is 122946884.

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 79032100 + 409617121 = 8890^2 + 20239^2 .

It is a cyclic number.

It is not a de Polignac number, because 488649221 - 2¹⁰ = 488648197 is a prime.

It is a super-2 number, since 2×488649221² = 477556122367813682, 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 (488649229) 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, 203606 + ... + 205991.

It is an arithmetic number, because the mean of its divisors is an integer number (122265003).

Almost surely, 2^488649221 is an apocalyptic number.

It is an amenable number.

488649221 is a deficient number, since it is larger than the sum of its proper divisors (410791).

488649221 is a wasteful number, since it uses less digits than its factorization.

488649221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410790.

The product of its digits is 221184, while the sum is 44.

The square root of 488649221 is about 22105.4115772586. The cubic root of 488649221 is about 787.6484153296.

It can be divided in two parts, 48864 and 9221, that added together give a palindrome (58085).

The spelling of 488649221 in words is "four hundred eighty-eight million, six hundred forty-nine thousand, two hundred twenty-one".