805649092 has 6 divisors (see below), whose sum is σ = 1409885918. Its totient is φ = 402824544.

The previous prime is 805649069. The next prime is 805649113. The reversal of 805649092 is 290946508.

It can be written as a sum of positive squares in only one way, i.e., 799419076 + 6230016 = 28274^2 + 2496^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100706133 + ... + 100706140.

Almost surely, 2^805649092 is an apocalyptic number.

It is an amenable number.

805649092 is a deficient number, since it is larger than the sum of its proper divisors (604236826).

805649092 is a wasteful number, since it uses less digits than its factorization.

805649092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201412277 (or 201412275 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 805649092 is about 28383.9583567902. The cubic root of 805649092 is about 930.4977071565.

The spelling of 805649092 in words is "eight hundred five million, six hundred forty-nine thousand, ninety-two".