127993679 has 12 divisors (see below), whose sum is σ = 140961912. Its totient is φ = 116130960.

The previous prime is 127993673. The next prime is 127993727. The reversal of 127993679 is 976399721.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-127993679 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 127993679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127993673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114029 + ... + 115145.

It is an arithmetic number, because the mean of its divisors is an integer number (11746826).

Almost surely, 2^127993679 is an apocalyptic number.

127993679 is a deficient number, since it is larger than the sum of its proper divisors (12968233).

127993679 is a wasteful number, since it uses less digits than its factorization.

127993679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086 (or 2075 counting only the distinct ones).

The product of its digits is 1285956, while the sum is 53.

The square root of 127993679 is about 11313.4291441631. The cubic root of 127993679 is about 503.9601240287.

The spelling of 127993679 in words is "one hundred twenty-seven million, nine hundred ninety-three thousand, six hundred seventy-nine".