104499721 has 2 divisors, whose sum is σ = 104499722. Its totient is φ = 104499720.

The previous prime is 104499691. The next prime is 104499727. The reversal of 104499721 is 127994401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63680400 + 40819321 = 7980^2 + 6389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104499721 is a prime.

It is not a weakly prime, because it can be changed into another prime (104499727) 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, 52249860 + 52249861.

It is an arithmetic number, because the mean of its divisors is an integer number (52249861).

Almost surely, 2^104499721 is an apocalyptic number.

It is an amenable number.

104499721 is a deficient number, since it is larger than the sum of its proper divisors (1).

104499721 is an equidigital number, since it uses as much as digits as its factorization.

104499721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 104499721 is about 10222.5105037853. The cubic root of 104499721 is about 471.0189467423.

The spelling of 104499721 in words is "one hundred four million, four hundred ninety-nine thousand, seven hundred twenty-one".