127448869 has 4 divisors (see below), whose sum is σ = 130557420. Its totient is φ = 124340320.

The previous prime is 127448863. The next prime is 127448879. The reversal of 127448869 is 968844721.

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 10484644 + 116964225 = 3238^2 + 10815^2 .

It is a cyclic number.

It is not a de Polignac number, because 127448869 - 2⁵ = 127448837 is a prime.

It is a super-2 number, since 2×127448869² = 32486428418758322, 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 (127448863) 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, 1554214 + ... + 1554295.

It is an arithmetic number, because the mean of its divisors is an integer number (32639355).

Almost surely, 2^127448869 is an apocalyptic number.

It is an amenable number.

127448869 is a deficient number, since it is larger than the sum of its proper divisors (3108551).

127448869 is an equidigital number, since it uses as much as digits as its factorization.

127448869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108550.

The product of its digits is 774144, while the sum is 49.

The square root of 127448869 is about 11289.3254448616. The cubic root of 127448869 is about 503.2440652277.

The spelling of 127448869 in words is "one hundred twenty-seven million, four hundred forty-eight thousand, eight hundred sixty-nine".