840835923 has 4 divisors (see below), whose sum is σ = 1121114568. Its totient is φ = 560557280.

The previous prime is 840835907. The next prime is 840835927. The reversal of 840835923 is 329538048.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 840835923 - 2⁴ = 840835907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (840835927) 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, 140139318 + ... + 140139323.

It is an arithmetic number, because the mean of its divisors is an integer number (280278642).

Almost surely, 2^840835923 is an apocalyptic number.

840835923 is a deficient number, since it is larger than the sum of its proper divisors (280278645).

840835923 is a wasteful number, since it uses less digits than its factorization.

840835923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280278644.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 840835923 is about 28997.1709482149. The cubic root of 840835923 is about 943.8516787193.

The spelling of 840835923 in words is "eight hundred forty million, eight hundred thirty-five thousand, nine hundred twenty-three".