840433023 has 32 divisors (see below), whose sum is σ = 1313625600. Its totient is φ = 529581888.

The previous prime is 840433007. The next prime is 840433037. The reversal of 840433023 is 320334048.

It is not a de Polignac number, because 840433023 - 2⁴ = 840433007 is a prime.

It is a super-2 number, since 2×840433023² = 1412655332297837058, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840433003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256411 + ... + 259667.

It is an arithmetic number, because the mean of its divisors is an integer number (41050800).

Almost surely, 2^840433023 is an apocalyptic number.

840433023 is a deficient number, since it is larger than the sum of its proper divisors (473192577).

840433023 is a wasteful number, since it uses less digits than its factorization.

840433023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788 (or 3782 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 840433023 is about 28990.2228863457. Note that the first 3 decimals coincide. The cubic root of 840433023 is about 943.7009007510.

The spelling of 840433023 in words is "eight hundred forty million, four hundred thirty-three thousand, twenty-three".