840850453 has 4 divisors (see below), whose sum is σ = 885105760. Its totient is φ = 796595148.

The previous prime is 840850433. The next prime is 840850463. The reversal of 840850453 is 354058048.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 840850453 - 2⁹ = 840849941 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 (840850433) 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, 22127625 + ... + 22127662.

It is an arithmetic number, because the mean of its divisors is an integer number (221276440).

Almost surely, 2^840850453 is an apocalyptic number.

It is an amenable number.

840850453 is a deficient number, since it is larger than the sum of its proper divisors (44255307).

840850453 is a wasteful number, since it uses less digits than its factorization.

840850453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44255306.

The product of its (nonzero) digits is 76800, while the sum is 37.

The square root of 840850453 is about 28997.4214888152. The cubic root of 840850453 is about 943.8571154065.

The spelling of 840850453 in words is "eight hundred forty million, eight hundred fifty thousand, four hundred fifty-three".