840792073 has 4 divisors (see below), whose sum is σ = 917227728. Its totient is φ = 764356420.

The previous prime is 840792037. The next prime is 840792079. The reversal of 840792073 is 370297048.

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 840792073 - 2⁹ = 840791561 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (840792079) 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, 38217811 + ... + 38217832.

It is an arithmetic number, because the mean of its divisors is an integer number (229306932).

Almost surely, 2^840792073 is an apocalyptic number.

It is an amenable number.

840792073 is a deficient number, since it is larger than the sum of its proper divisors (76435655).

840792073 is a wasteful number, since it uses less digits than its factorization.

840792073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76435654.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 840792073 is about 28996.4148301130. The cubic root of 840792073 is about 943.8352709935.

The spelling of 840792073 in words is "eight hundred forty million, seven hundred ninety-two thousand, seventy-three".