10091998 has 8 divisors (see below), whose sum is σ = 17300592. Its totient is φ = 4325136.

The previous prime is 10091993. The next prime is 10092001. The reversal of 10091998 is 89919001.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10091993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360415 + ... + 360442.

It is an arithmetic number, because the mean of its divisors is an integer number (2162574).

Almost surely, 2^10091998 is an apocalyptic number.

10091998 is a deficient number, since it is larger than the sum of its proper divisors (7208594).

10091998 is an equidigital number, since it uses as much as digits as its factorization.

10091998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720866.

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 10091998 is about 3176.7905187469. The cubic root of 10091998 is about 216.1021321992.

The spelling of 10091998 in words is "ten million, ninety-one thousand, nine hundred ninety-eight".