8210989090 has 8 divisors (see below), whose sum is σ = 14779780380. Its totient is φ = 3284395632.

The previous prime is 8210989079. The next prime is 8210989093. The reversal of 8210989090 is 909890128.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7948257409 + 262731681 = 89153^2 + 16209^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 8210989090.

It is not an unprimeable number, because it can be changed into a prime (8210989093) 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, 410549445 + ... + 410549464.

Almost surely, 2^8210989090 is an apocalyptic number.

8210989090 is a deficient number, since it is larger than the sum of its proper divisors (6568791290).

8210989090 is a wasteful number, since it uses less digits than its factorization.

8210989090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821098916.

The product of its (nonzero) digits is 93312, while the sum is 46.

The square root of 8210989090 is about 90614.5081650836. The cubic root of 8210989090 is about 2017.4300790561.

The spelling of 8210989090 in words is "eight billion, two hundred ten million, nine hundred eighty-nine thousand, ninety".