127913889 has 8 divisors (see below), whose sum is σ = 173348032. Its totient is φ = 83877840.

The previous prime is 127913887. The next prime is 127913893. The reversal of 127913889 is 988319721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 127913889 - 2¹ = 127913887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127913881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349309 + ... + 349674.

It is an arithmetic number, because the mean of its divisors is an integer number (21668504).

Almost surely, 2^127913889 is an apocalyptic number.

It is an amenable number.

127913889 is a deficient number, since it is larger than the sum of its proper divisors (45434143).

127913889 is an equidigital number, since it uses as much as digits as its factorization.

127913889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699047.

The product of its digits is 217728, while the sum is 48.

The square root of 127913889 is about 11309.9022542195. The cubic root of 127913889 is about 503.8553809997.

The spelling of 127913889 in words is "one hundred twenty-seven million, nine hundred thirteen thousand, eight hundred eighty-nine".