127748889 has 6 divisors (see below), whose sum is σ = 184526186. Its totient is φ = 85165920.

The previous prime is 127748851. The next prime is 127748891. The reversal of 127748889 is 988847721.

It is a happy number.

127748889 is a `hidden beast` number, since 12 + 77 + 488 + 89 = 666.

It can be written as a sum of positive squares in only one way, i.e., 116640000 + 11108889 = 10800^2 + 3333^2 .

It is not a de Polignac number, because 127748889 - 2⁸ = 127748633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127748849) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7097152 + ... + 7097169.

Almost surely, 2^127748889 is an apocalyptic number.

It is an amenable number.

127748889 is a deficient number, since it is larger than the sum of its proper divisors (56777297).

127748889 is a wasteful number, since it uses less digits than its factorization.

127748889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14194327 (or 14194324 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 54.

The square root of 127748889 is about 11302.6054076040. The cubic root of 127748889 is about 503.6386416741.

The spelling of 127748889 in words is "one hundred twenty-seven million, seven hundred forty-eight thousand, eight hundred eighty-nine".