805021441 has 6 divisors (see below), whose sum is σ = 936453570. Its totient is φ = 690018336.

The previous prime is 805021421. The next prime is 805021457. The reversal of 805021441 is 144120508.

It can be written as a sum of positive squares in only one way, i.e., 758727025 + 46294416 = 27545^2 + 6804^2 .

It is not a de Polignac number, because 805021441 - 2¹⁵ = 804988673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (805021421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8214456 + ... + 8214553.

It is an arithmetic number, because the mean of its divisors is an integer number (156075595).

Almost surely, 2^805021441 is an apocalyptic number.

It is an amenable number.

805021441 is a deficient number, since it is larger than the sum of its proper divisors (131432129).

805021441 is a wasteful number, since it uses less digits than its factorization.

805021441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16429023 (or 16429016 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 805021441 is about 28372.8997636830. The cubic root of 805021441 is about 930.2560057539.

Adding to 805021441 its reverse (144120508), we get a palindrome (949141949).

The spelling of 805021441 in words is "eight hundred five million, twenty-one thousand, four hundred forty-one".