104821905 has 8 divisors (see below), whose sum is σ = 167715072. Its totient is φ = 55905008.

The previous prime is 104821901. The next prime is 104821907. The reversal of 104821905 is 509128401.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 104821905 - 2² = 104821901 is a prime.

It is not an unprimeable number, because it can be changed into a prime (104821901) 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, 3494049 + ... + 3494078.

It is an arithmetic number, because the mean of its divisors is an integer number (20964384).

Almost surely, 2^104821905 is an apocalyptic number.

104821905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

104821905 is a deficient number, since it is larger than the sum of its proper divisors (62893167).

104821905 is an equidigital number, since it uses as much as digits as its factorization.

104821905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6988135.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 104821905 is about 10238.2569317243. The cubic root of 104821905 is about 471.5025176541.

The spelling of 104821905 in words is "one hundred four million, eight hundred twenty-one thousand, nine hundred five".