840877073 has 8 divisors (see below), whose sum is σ = 851135400. Its totient is φ = 830636928.

The previous prime is 840877061. The next prime is 840877099. The reversal of 840877073 is 370778048.

It can be written as a sum of positive squares in 4 ways, for example, as 283024 + 840594049 = 532^2 + 28993^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-840877073 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (840877043) 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, 104063 + ... + 111851.

It is an arithmetic number, because the mean of its divisors is an integer number (106391925).

Almost surely, 2^840877073 is an apocalyptic number.

It is an amenable number.

840877073 is a deficient number, since it is larger than the sum of its proper divisors (10258327).

840877073 is a wasteful number, since it uses less digits than its factorization.

840877073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9091.

The product of its (nonzero) digits is 263424, while the sum is 44.

The square root of 840877073 is about 28997.8804915118. The cubic root of 840877073 is about 943.8670756443.

The spelling of 840877073 in words is "eight hundred forty million, eight hundred seventy-seven thousand, seventy-three".