882021091 has 4 divisors (see below), whose sum is σ = 1008024112. Its totient is φ = 756018072.

The previous prime is 882021073. The next prime is 882021121. The reversal of 882021091 is 190120288.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 882021091 - 2⁷ = 882020963 is a prime.

It is a super-2 number, since 2×882021091² = 1555922409937660562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (882021011) 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, 63001500 + ... + 63001513.

It is an arithmetic number, because the mean of its divisors is an integer number (252006028).

Almost surely, 2^882021091 is an apocalyptic number.

882021091 is a deficient number, since it is larger than the sum of its proper divisors (126003021).

882021091 is a wasteful number, since it uses less digits than its factorization.

882021091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126003020.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 882021091 is about 29698.8398931675. The cubic root of 882021091 is about 959.0170389388.

The spelling of 882021091 in words is "eight hundred eighty-two million, twenty-one thousand, ninety-one".