871493808 has 30 divisors (see below), whose sum is σ = 2251887492. Its totient is φ = 290429760.

The previous prime is 871493801. The next prime is 871493809. The reversal of 871493808 is 808394178.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (871493801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 202398 + ... + 206658.

Almost surely, 2^871493808 is an apocalyptic number.

It is an amenable number.

871493808 is an abundant number, since it is smaller than the sum of its proper divisors (1380393684).

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

871493808 is an frugal number, since it uses more digits than its factorization.

871493808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8533 (or 4266 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 871493808 is about 29521.0739642039. The cubic root of 871493808 is about 955.1863375514.

Multiplying 871493808 by its sum of digits (48), we get a square (41831702784 = 204528²).

871493808 divided by its sum of digits (48) gives a square (18156121 = 4261²).

The spelling of 871493808 in words is "eight hundred seventy-one million, four hundred ninety-three thousand, eight hundred eight".