104099881 has 2 divisors, whose sum is σ = 104099882. Its totient is φ = 104099880.

The previous prime is 104099869. The next prime is 104099887. The reversal of 104099881 is 188990401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52490025 + 51609856 = 7245^2 + 7184^2 .

It is an emirp because it is prime and its reverse (188990401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104099881 - 2⁷ = 104099753 is a prime.

It is a super-2 number, since 2×104099881² = 21673570448428322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (104099887) by changing a digit.

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, 52049940 + 52049941.

It is an arithmetic number, because the mean of its divisors is an integer number (52049941).

Almost surely, 2^104099881 is an apocalyptic number.

It is an amenable number.

104099881 is a deficient number, since it is larger than the sum of its proper divisors (1).

104099881 is an equidigital number, since it uses as much as digits as its factorization.

104099881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 104099881 is about 10202.9349208941. The cubic root of 104099881 is about 470.4174365929.

The spelling of 104099881 in words is "one hundred four million, ninety-nine thousand, eight hundred eighty-one".