127899617 has 8 divisors (see below), whose sum is σ = 129002400. Its totient is φ = 126801504.

The previous prime is 127899589. The next prime is 127899647. The reversal of 127899617 is 716998721.

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 127899617 - 2²⁰ = 126851041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127899647) 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, 72338 + ... + 74084.

It is an arithmetic number, because the mean of its divisors is an integer number (16125300).

Almost surely, 2^127899617 is an apocalyptic number.

It is an amenable number.

127899617 is a deficient number, since it is larger than the sum of its proper divisors (1102783).

127899617 is a wasteful number, since it uses less digits than its factorization.

127899617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2335.

The product of its digits is 381024, while the sum is 50.

The square root of 127899617 is about 11309.2712851006. The cubic root of 127899617 is about 503.8366410711.

The spelling of 127899617 in words is "one hundred twenty-seven million, eight hundred ninety-nine thousand, six hundred seventeen".