805641099 has 8 divisors (see below), whose sum is σ = 1076670672. Its totient is φ = 535852800.

The previous prime is 805641061. The next prime is 805641107. The reversal of 805641099 is 990146508.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 805641099 - 2²⁴ = 788863883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 805641099.

It is not an unprimeable number, because it can be changed into a prime (805641019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308802 + ... + 311399.

It is an arithmetic number, because the mean of its divisors is an integer number (134583834).

Almost surely, 2^805641099 is an apocalyptic number.

805641099 is a deficient number, since it is larger than the sum of its proper divisors (271029573).

805641099 is a wasteful number, since it uses less digits than its factorization.

805641099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620637.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 805641099 is about 28383.8175550788. The cubic root of 805641099 is about 930.4946299306.

The spelling of 805641099 in words is "eight hundred five million, six hundred forty-one thousand, ninety-nine".