127989641 has 16 divisors (see below), whose sum is σ = 145877760. Its totient is φ = 111397440.

The previous prime is 127989613. The next prime is 127989661. The reversal of 127989641 is 146989721.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127989641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127989611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18215 + ... + 24243.

It is an arithmetic number, because the mean of its divisors is an integer number (9117360).

Almost surely, 2^127989641 is an apocalyptic number.

It is an amenable number.

127989641 is a deficient number, since it is larger than the sum of its proper divisors (17888119).

127989641 is a wasteful number, since it uses less digits than its factorization.

127989641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6136.

The product of its digits is 217728, while the sum is 47.

The square root of 127989641 is about 11313.2506822752. The cubic root of 127989641 is about 503.9548242556.

The spelling of 127989641 in words is "one hundred twenty-seven million, nine hundred eighty-nine thousand, six hundred forty-one".