869921127 has 20 divisors (see below), whose sum is σ = 1375955856. Its totient is φ = 545832000.

The previous prime is 869921119. The next prime is 869921147. The reversal of 869921127 is 721129968.

It is not a de Polignac number, because 869921127 - 2³ = 869921119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869921147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 314499 + ... + 317252.

Almost surely, 2^869921127 is an apocalyptic number.

869921127 is a deficient number, since it is larger than the sum of its proper divisors (506034729).

869921127 is a wasteful number, since it uses less digits than its factorization.

869921127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631780 (or 631771 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 869921127 is about 29494.4253546327. The cubic root of 869921127 is about 954.6114212741.

The spelling of 869921127 in words is "eight hundred sixty-nine million, nine hundred twenty-one thousand, one hundred twenty-seven".