842864904 has 96 divisors (see below), whose sum is σ = 2642016000. Its totient is φ = 237758976.

The previous prime is 842864899. The next prime is 842864929. The reversal of 842864904 is 409468248.

842864904 is a `hidden beast` number, since 84 + 2 + 86 + 490 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 842864904.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29232 + ... + 50400.

It is an arithmetic number, because the mean of its divisors is an integer number (27521000).

Almost surely, 2^842864904 is an apocalyptic number.

842864904 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 842864904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1321008000).

842864904 is an abundant number, since it is smaller than the sum of its proper divisors (1799151096).

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

842864904 is a wasteful number, since it uses less digits than its factorization.

842864904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21267 (or 21260 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The square root of 842864904 is about 29032.1357120002. The cubic root of 842864904 is about 944.6102566830.

The spelling of 842864904 in words is "eight hundred forty-two million, eight hundred sixty-four thousand, nine hundred four".