801199090 has 16 divisors (see below), whose sum is σ = 1461915288. Its totient is φ = 316089216.

The previous prime is 801199079. The next prime is 801199111. The reversal of 801199090 is 90991108.

It can be written as a sum of positive squares in 4 ways, for example, as 490135321 + 311063769 = 22139^2 + 17637^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548037 + ... + 549496.

Almost surely, 2^801199090 is an apocalyptic number.

801199090 is a deficient number, since it is larger than the sum of its proper divisors (660716198).

801199090 is a wasteful number, since it uses less digits than its factorization.

801199090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097613.

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 801199090 is about 28305.4604272745. The cubic root of 801199090 is about 928.7813420839.

The spelling of 801199090 in words is "eight hundred one million, one hundred ninety-nine thousand, ninety".