880921 has 4 divisors (see below), whose sum is σ = 899712. Its totient is φ = 862132.

The previous prime is 880909. The next prime is 880939. The reversal of 880921 is 129088.

880921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 880921 - 2⁷ = 880793 is a prime.

It is a Duffinian number.

880921 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 880921.

It is not an unprimeable number, because it can be changed into a prime (880951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9325 + ... + 9418.

It is an arithmetic number, because the mean of its divisors is an integer number (224928).

2⁸⁸⁰⁹²¹ is an apocalyptic number.

It is an amenable number.

880921 is a deficient number, since it is larger than the sum of its proper divisors (18791).

880921 is a wasteful number, since it uses less digits than its factorization.

880921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18790.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 880921 is about 938.5739182398. The cubic root of 880921 is about 95.8618165283.

The spelling of 880921 in words is "eight hundred eighty thousand, nine hundred twenty-one".