840732473 has 4 divisors (see below), whose sum is σ = 960837120. Its totient is φ = 720627828.

The previous prime is 840732469. The next prime is 840732559. The reversal of 840732473 is 374237048.

840732473 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 840732473 - 2² = 840732469 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (840732413) 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, 60052313 + ... + 60052326.

It is an arithmetic number, because the mean of its divisors is an integer number (240209280).

Almost surely, 2^840732473 is an apocalyptic number.

It is an amenable number.

840732473 is a deficient number, since it is larger than the sum of its proper divisors (120104647).

840732473 is a wasteful number, since it uses less digits than its factorization.

840732473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120104646.

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

The square root of 840732473 is about 28995.3870986404. The cubic root of 840732473 is about 943.8129690423.

The spelling of 840732473 in words is "eight hundred forty million, seven hundred thirty-two thousand, four hundred seventy-three".