1001099998 has 8 divisors (see below), whose sum is σ = 1501837992. Its totient is φ = 500487336.

The previous prime is 1001099971. The next prime is 1001100007. The reversal of 1001099998 is 8999901001.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7840 + ... + 45427.

It is an arithmetic number, because the mean of its divisors is an integer number (187729749).

Almost surely, 2^1001099998 is an apocalyptic number.

1001099998 is a deficient number, since it is larger than the sum of its proper divisors (500737994).

1001099998 is an equidigital number, since it uses as much as digits as its factorization.

1001099998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62666.

The product of its (nonzero) digits is 52488, while the sum is 46.

The square root of 1001099998 is about 31640.1643168932. The cubic root of 1001099998 is about 1000.3665316381.

The spelling of 1001099998 in words is "one billion, one million, ninety-nine thousand, nine hundred ninety-eight".