8990999982 has 12 divisors (see below), whose sum is σ = 19480500000. Its totient is φ = 2996999988.

The previous prime is 8990999971. The next prime is 8990999987. The reversal of 8990999982 is 2899990998.

It is a self number, because there is not a number n which added to its sum of digits gives 8990999982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8990999987) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 249749982 + ... + 249750017.

It is an arithmetic number, because the mean of its divisors is an integer number (1623375000).

Almost surely, 2^8990999982 is an apocalyptic number.

8990999982 is an abundant number, since it is smaller than the sum of its proper divisors (10489500018).

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

8990999982 is a wasteful number, since it uses less digits than its factorization.

8990999982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499500007 (or 499500004 counting only the distinct ones).

The product of its (nonzero) digits is 68024448, while the sum is 72.

The square root of 8990999982 is about 94820.8836807589. The cubic root of 8990999982 is about 2079.3902291410.

The spelling of 8990999982 in words is "eight billion, nine hundred ninety million, nine hundred ninety-nine thousand, nine hundred eighty-two".