985208890 has 8 divisors (see below), whose sum is σ = 1773376020. Its totient is φ = 394083552.

The previous prime is 985208867. The next prime is 985208893. The reversal of 985208890 is 98802589.

It is a happy number.

985208890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 983888689 + 1320201 = 31367^2 + 1149^2 .

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

It is not an unprimeable number, because it can be changed into a prime (985208893) 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, 49260435 + ... + 49260454.

Almost surely, 2^985208890 is an apocalyptic number.

985208890 is a deficient number, since it is larger than the sum of its proper divisors (788167130).

985208890 is a wasteful number, since it uses less digits than its factorization.

985208890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98520896.

The product of its (nonzero) digits is 414720, while the sum is 49.

The square root of 985208890 is about 31388.0373709476. The cubic root of 985208890 is about 995.0451197101.

The spelling of 985208890 in words is "nine hundred eighty-five million, two hundred eight thousand, eight hundred ninety".