8490993000 has 256 divisors, whose sum is σ = 31255511040. Its totient is φ = 1878048000.

The previous prime is 8490992981. The next prime is 8490993019. The reversal of 8490993000 is 3990948.

It is an interprime number because it is at equal distance from previous prime (8490992981) and next prime (8490993019).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 644479 + ... + 657521.

It is an arithmetic number, because the mean of its divisors is an integer number (122091840).

Almost surely, 2^8490993000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8490993000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15627755520).

8490993000 is an abundant number, since it is smaller than the sum of its proper divisors (22764518040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8490993000 is a wasteful number, since it uses less digits than its factorization.

8490993000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13105 (or 13091 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 8490993000 is about 92146.5843100003. The cubic root of 8490993000 is about 2040.1064438884.

The spelling of 8490993000 in words is "eight billion, four hundred ninety million, nine hundred ninety-three thousand".