127989662 has 24 divisors (see below), whose sum is σ = 203682600. Its totient is φ = 60309648.

The previous prime is 127989661. The next prime is 127989679. The reversal of 127989662 is 266989721.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 127989662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127989661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 193889 + ... + 194547.

It is an arithmetic number, because the mean of its divisors is an integer number (8486775).

Almost surely, 2^127989662 is an apocalyptic number.

127989662 is a deficient number, since it is larger than the sum of its proper divisors (75692938).

127989662 is a wasteful number, since it uses less digits than its factorization.

127989662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968 (or 949 counting only the distinct ones).

The product of its digits is 653184, while the sum is 50.

The square root of 127989662 is about 11313.2516103904. The cubic root of 127989662 is about 503.9548518179.

The spelling of 127989662 in words is "one hundred twenty-seven million, nine hundred eighty-nine thousand, six hundred sixty-two".