127838987 has 8 divisors (see below), whose sum is σ = 130187904. Its totient is φ = 125506368.

The previous prime is 127838969. The next prime is 127839029. The reversal of 127838987 is 789838721.

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

It is a cyclic number.

It is not a de Polignac number, because 127838987 - 2⁶ = 127838923 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127838917) 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, 12353 + ... + 20205.

It is an arithmetic number, because the mean of its divisors is an integer number (16273488).

Almost surely, 2^127838987 is an apocalyptic number.

127838987 is a deficient number, since it is larger than the sum of its proper divisors (2348917).

127838987 is an equidigital number, since it uses as much as digits as its factorization.

127838987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8149.

The product of its digits is 1354752, while the sum is 53.

The square root of 127838987 is about 11306.5904232885. The cubic root of 127838987 is about 503.7570149692.

The spelling of 127838987 in words is "one hundred twenty-seven million, eight hundred thirty-eight thousand, nine hundred eighty-seven".