1011099984 has 40 divisors (see below), whose sum is σ = 2621751840. Its totient is φ = 335776128.

The previous prime is 1011099961. The next prime is 1011099989. The reversal of 1011099984 is 4899901101.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011099989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26242 + ... + 52065.

It is an arithmetic number, because the mean of its divisors is an integer number (65543796).

Almost surely, 2^1011099984 is an apocalyptic number.

It is an amenable number.

1011099984 is an abundant number, since it is smaller than the sum of its proper divisors (1610651856).

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

1011099984 is a wasteful number, since it uses less digits than its factorization.

1011099984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78587 (or 78581 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 42.

The square root of 1011099984 is about 31797.7984143557. The cubic root of 1011099984 is about 1003.6863885078.

The spelling of 1011099984 in words is "one billion, eleven million, ninety-nine thousand, nine hundred eighty-four".