900447 has 4 divisors (see below), whose sum is σ = 1200600. Its totient is φ = 600296.

The previous prime is 900443. The next prime is 900461. The reversal of 900447 is 744009.

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

It is a cyclic number.

It is not a de Polignac number, because 900447 - 2² = 900443 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150072 + ... + 150077.

It is an arithmetic number, because the mean of its divisors is an integer number (300150).

2⁹⁰⁰⁴⁴⁷ is an apocalyptic number.

900447 is a deficient number, since it is larger than the sum of its proper divisors (300153).

900447 is a wasteful number, since it uses less digits than its factorization.

900447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300152.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 900447 is about 948.9188584911. The cubic root of 900447 is about 96.5649200282.

The spelling of 900447 in words is "nine hundred thousand, four hundred forty-seven".