127587993 has 8 divisors (see below), whose sum is σ = 183203328. Its totient is φ = 78515664.

The previous prime is 127587979. The next prime is 127588001. The reversal of 127587993 is 399785721.

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

It is a de Polignac number, because none of the positive numbers 2^k-127587993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (127587953) 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, 1635705 + ... + 1635782.

It is an arithmetic number, because the mean of its divisors is an integer number (22900416).

Almost surely, 2^127587993 is an apocalyptic number.

127587993 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

127587993 is a deficient number, since it is larger than the sum of its proper divisors (55615335).

127587993 is a wasteful number, since it uses less digits than its factorization.

127587993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3271503.

The product of its digits is 952560, while the sum is 51.

The square root of 127587993 is about 11295.4855141335. The cubic root of 127587993 is about 503.4271134510.

The spelling of 127587993 in words is "one hundred twenty-seven million, five hundred eighty-seven thousand, nine hundred ninety-three".