840323433 has 8 divisors (see below), whose sum is σ = 1120694848. Its totient is φ = 560083824.

The previous prime is 840323389. The next prime is 840323443. The reversal of 840323433 is 334323048.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 840323433 - 2⁸ = 840323177 is a prime.

It is a super-2 number, since 2×840323433² = 1412286944097810978, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 840323433.

It is not an unprimeable number, because it can be changed into a prime (840323443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16966 + ... + 44367.

It is an arithmetic number, because the mean of its divisors is an integer number (140086856).

Almost surely, 2^840323433 is an apocalyptic number.

It is an amenable number.

840323433 is a deficient number, since it is larger than the sum of its proper divisors (280371415).

840323433 is a wasteful number, since it uses less digits than its factorization.

840323433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65903.

The product of its (nonzero) digits is 20736, while the sum is 30.

The square root of 840323433 is about 28988.3327047279. The cubic root of 840323433 is about 943.6598803586.

The spelling of 840323433 in words is "eight hundred forty million, three hundred twenty-three thousand, four hundred thirty-three".