846400871 has 4 divisors (see below), whose sum is σ = 847709712. Its totient is φ = 845092032.

The previous prime is 846400861. The next prime is 846400901. The reversal of 846400871 is 178004648.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-846400871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (846400861) 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, 653450 + ... + 654743.

It is an arithmetic number, because the mean of its divisors is an integer number (211927428).

Almost surely, 2^846400871 is an apocalyptic number.

846400871 is a deficient number, since it is larger than the sum of its proper divisors (1308841).

846400871 is a wasteful number, since it uses less digits than its factorization.

846400871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308840.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 846400871 is about 29092.9694428052. The cubic root of 846400871 is about 945.9293493596.

The spelling of 846400871 in words is "eight hundred forty-six million, four hundred thousand, eight hundred seventy-one".