104391998 has 4 divisors (see below), whose sum is σ = 156588000. Its totient is φ = 52195998.

The previous prime is 104391997. The next prime is 104392007. The reversal of 104391998 is 899193401.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104391997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26097998 + ... + 26098001.

It is an arithmetic number, because the mean of its divisors is an integer number (39147000).

Almost surely, 2^104391998 is an apocalyptic number.

104391998 is a deficient number, since it is larger than the sum of its proper divisors (52196002).

104391998 is an equidigital number, since it uses as much as digits as its factorization.

104391998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52196001.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 104391998 is about 10217.2402340358. The cubic root of 104391998 is about 470.8570419436.

The spelling of 104391998 in words is "one hundred four million, three hundred ninety-one thousand, nine hundred ninety-eight".