887121943 has 4 divisors (see below), whose sum is σ = 887927328. Its totient is φ = 886316560.

The previous prime is 887121887. The next prime is 887121959. The reversal of 887121943 is 349121788.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-887121943 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 887121943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (887121973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401038 + ... + 403243.

It is an arithmetic number, because the mean of its divisors is an integer number (221981832).

Almost surely, 2^887121943 is an apocalyptic number.

887121943 is a deficient number, since it is larger than the sum of its proper divisors (805385).

887121943 is a wasteful number, since it uses less digits than its factorization.

887121943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805384.

The product of its digits is 96768, while the sum is 43.

The square root of 887121943 is about 29784.5923759248. The cubic root of 887121943 is about 960.8621966926.

The spelling of 887121943 in words is "eight hundred eighty-seven million, one hundred twenty-one thousand, nine hundred forty-three".