840749333 has 4 divisors (see below), whose sum is σ = 841702368. Its totient is φ = 839796300.

The previous prime is 840749323. The next prime is 840749341. The reversal of 840749333 is 333947048.

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 840749333 - 2⁴ = 840749317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840749303) 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 3 ways as a sum of consecutive naturals, for example, 475193 + ... + 476958.

It is an arithmetic number, because the mean of its divisors is an integer number (210425592).

Almost surely, 2^840749333 is an apocalyptic number.

It is an amenable number.

840749333 is a deficient number, since it is larger than the sum of its proper divisors (953035).

840749333 is an equidigital number, since it uses as much as digits as its factorization.

840749333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953034.

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 840749333 is about 28995.6778330840. The cubic root of 840749333 is about 943.8192780569.

The spelling of 840749333 in words is "eight hundred forty million, seven hundred forty-nine thousand, three hundred thirty-three".