860408406 has 120 divisors (see below), whose sum is σ = 2278248984. Its totient is φ = 240589440.

The previous prime is 860408389. The next prime is 860408431. The reversal of 860408406 is 604804068.

860408406 is a `hidden beast` number, since 8 + 604 + 0 + 8 + 40 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 299730 + ... + 302586.

Almost surely, 2^860408406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 860408406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1139124492).

860408406 is an abundant number, since it is smaller than the sum of its proper divisors (1417840578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

860408406 is a wasteful number, since it uses less digits than its factorization.

860408406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2908 (or 2886 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 860408406 is about 29332.7190352344. The cubic root of 860408406 is about 951.1190528542.

The spelling of 860408406 in words is "eight hundred sixty million, four hundred eight thousand, four hundred six".