85088890 has 12 divisors (see below), whose sum is σ = 153212526. Its totient is φ = 34023888.

The previous prime is 85088881. The next prime is 85088909. The reversal of 85088890 is 9888058.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 78375609 + 6713281 = 8853^2 + 2591^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 85088890.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27712 + ... + 30628.

Almost surely, 2^85088890 is an apocalyptic number.

85088890 is a deficient number, since it is larger than the sum of its proper divisors (68123636).

85088890 is an frugal number, since it uses more digits than its factorization.

85088890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5841 (or 2924 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 46.

The square root of 85088890 is about 9224.3639347112. The cubic root of 85088890 is about 439.8361821289.

The spelling of 85088890 in words is "eighty-five million, eighty-eight thousand, eight hundred ninety".