805003869 has 4 divisors (see below), whose sum is σ = 1073338496. Its totient is φ = 536669244.

The previous prime is 805003853. The next prime is 805003889. The reversal of 805003869 is 968300508.

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 not a de Polignac number, because 805003869 - 2⁴ = 805003853 is a prime.

It is a super-2 number, since 2×805003869² = 1296062458209938322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805003819) 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, 134167309 + ... + 134167314.

It is an arithmetic number, because the mean of its divisors is an integer number (268334624).

Almost surely, 2^805003869 is an apocalyptic number.

It is an amenable number.

805003869 is a deficient number, since it is larger than the sum of its proper divisors (268334627).

805003869 is a wasteful number, since it uses less digits than its factorization.

805003869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268334626.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 805003869 is about 28372.5901003063. The cubic root of 805003869 is about 930.2492371650.

The spelling of 805003869 in words is "eight hundred five million, three thousand, eight hundred sixty-nine".