900047 has 4 divisors (see below), whose sum is σ = 911520. Its totient is φ = 888576.

The previous prime is 900037. The next prime is 900061. The reversal of 900047 is 740009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740009 = 41 ⋅18049.

It is a cyclic number.

It is not a de Polignac number, because 900047 - 2⁸ = 899791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900007) 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, 5618 + ... + 5775.

It is an arithmetic number, because the mean of its divisors is an integer number (227880).

2⁹⁰⁰⁰⁴⁷ is an apocalyptic number.

900047 is a deficient number, since it is larger than the sum of its proper divisors (11473).

900047 is a wasteful number, since it uses less digits than its factorization.

900047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11472.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 900047 is about 948.7080689021. The cubic root of 900047 is about 96.5506190980.

The spelling of 900047 in words is "nine hundred thousand, forty-seven".