100505447 has 8 divisors (see below), whose sum is σ = 116247936. Its totient is φ = 85109112.

The previous prime is 100505429. The next prime is 100505467. The reversal of 100505447 is 744505001.

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 100505447 - 2⁸ = 100505191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100505407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85913 + ... + 87074.

It is an arithmetic number, because the mean of its divisors is an integer number (14530992).

Almost surely, 2^100505447 is an apocalyptic number.

100505447 is a deficient number, since it is larger than the sum of its proper divisors (15742489).

100505447 is an equidigital number, since it uses as much as digits as its factorization.

100505447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173077.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 100505447 is about 10025.2404958684. The cubic root of 100505447 is about 464.9395951905.

The spelling of 100505447 in words is "one hundred million, five hundred five thousand, four hundred forty-seven".