104872819 has 4 divisors (see below), whose sum is σ = 105158944. Its totient is φ = 104586696.

The previous prime is 104872777. The next prime is 104872861. The reversal of 104872819 is 918278401.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (104872777) and next prime (104872861).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104872819 is a prime.

It is a super-2 number, since 2×104872819² = 21996616330013522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104872879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142512 + ... + 143245.

It is an arithmetic number, because the mean of its divisors is an integer number (26289736).

Almost surely, 2^104872819 is an apocalyptic number.

104872819 is a deficient number, since it is larger than the sum of its proper divisors (286125).

104872819 is an equidigital number, since it uses as much as digits as its factorization.

104872819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286124.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 104872819 is about 10240.7430882725. The cubic root of 104872819 is about 471.5788445551.

The spelling of 104872819 in words is "one hundred four million, eight hundred seventy-two thousand, eight hundred nineteen".