101993998 has 4 divisors (see below), whose sum is σ = 152991000. Its totient is φ = 50996998.

The previous prime is 101993989. The next prime is 101994017. The reversal of 101993998 is 899399101.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 25498498 + ... + 25498501.

It is an arithmetic number, because the mean of its divisors is an integer number (38247750).

Almost surely, 2^101993998 is an apocalyptic number.

101993998 is a deficient number, since it is larger than the sum of its proper divisors (50997002).

101993998 is an equidigital number, since it uses as much as digits as its factorization.

101993998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50997001.

The product of its (nonzero) digits is 157464, while the sum is 49.

The square root of 101993998 is about 10099.2077907131. The cubic root of 101993998 is about 467.2237081731.

The spelling of 101993998 in words is "one hundred one million, nine hundred ninety-three thousand, nine hundred ninety-eight".