840774233 has 8 divisors (see below), whose sum is σ = 907082568. Its totient is φ = 774699264.

The previous prime is 840774229. The next prime is 840774241. The reversal of 840774233 is 332477048.

It can be written as a sum of positive squares in 4 ways, for example, as 3655744 + 837118489 = 1912^2 + 28933^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 840774233 - 2² = 840774229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (840774283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50816 + ... + 65297.

It is an arithmetic number, because the mean of its divisors is an integer number (113385321).

Almost surely, 2^840774233 is an apocalyptic number.

It is an amenable number.

840774233 is a deficient number, since it is larger than the sum of its proper divisors (66308335).

840774233 is a wasteful number, since it uses less digits than its factorization.

840774233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116683.

The product of its (nonzero) digits is 112896, while the sum is 38.

The square root of 840774233 is about 28996.1072042438. The cubic root of 840774233 is about 943.8285954865.

The spelling of 840774233 in words is "eight hundred forty million, seven hundred seventy-four thousand, two hundred thirty-three".