1000099968 has 64 divisors (see below), whose sum is σ = 3036025920. Its totient is φ = 285742080.

The previous prime is 1000099967. The next prime is 1000099993. The reversal of 1000099968 is 8699900001.

It is a tau number, because it is divible by the number of its divisors (64).

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

It is not an unprimeable number, because it can be changed into a prime (1000099963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183343 + ... + 188718.

It is an arithmetic number, because the mean of its divisors is an integer number (47437905).

Almost surely, 2^1000099968 is an apocalyptic number.

It is an amenable number.

1000099968 is an abundant number, since it is smaller than the sum of its proper divisors (2035925952).

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

1000099968 is an equidigital number, since it uses as much as digits as its factorization.

1000099968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372085 (or 372073 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 42.

The square root of 1000099968 is about 31624.3571950482. The cubic root of 1000099968 is about 1000.0333215563.

Adding to 1000099968 its reverse (8699900001), we get a palindrome (9699999969).

The spelling of 1000099968 in words is "one billion, ninety-nine thousand, nine hundred sixty-eight".