909143 has 4 divisors (see below), whose sum is σ = 962640. Its totient is φ = 855648.

The previous prime is 909133. The next prime is 909151. The reversal of 909143 is 341909.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341909 = 181 ⋅1889.

It is a cyclic number.

It is not a de Polignac number, because 909143 - 2¹⁶ = 843607 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 (909113) 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, 26723 + ... + 26756.

It is an arithmetic number, because the mean of its divisors is an integer number (240660).

2⁹⁰⁹¹⁴³ is an apocalyptic number.

909143 is a deficient number, since it is larger than the sum of its proper divisors (53497).

909143 is a wasteful number, since it uses less digits than its factorization.

909143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53496.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 909143 is about 953.4899055575. The cubic root of 909143 is about 96.8747808528.

The spelling of 909143 in words is "nine hundred nine thousand, one hundred forty-three".