127091983 has 4 divisors (see below), whose sum is σ = 134568000. Its totient is φ = 119615968.

The previous prime is 127091981. The next prime is 127091999. The reversal of 127091983 is 389190721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 389190721 = 43 ⋅9050947.

It is a cyclic number.

It is not a de Polignac number, because 127091983 - 2¹ = 127091981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127091981) 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, 3737983 + ... + 3738016.

It is an arithmetic number, because the mean of its divisors is an integer number (33642000).

Almost surely, 2^127091983 is an apocalyptic number.

127091983 is a deficient number, since it is larger than the sum of its proper divisors (7476017).

127091983 is an equidigital number, since it uses as much as digits as its factorization.

127091983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7476016.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 127091983 is about 11273.5080165847. The cubic root of 127091983 is about 502.7738932410.

The spelling of 127091983 in words is "one hundred twenty-seven million, ninety-one thousand, nine hundred eighty-three".