869818404 has 288 divisors, whose sum is σ = 2750993280. Its totient is φ = 211341312.

The previous prime is 869818387. The next prime is 869818451. The reversal of 869818404 is 404818968.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7697452 + ... + 7697564.

It is an arithmetic number, because the mean of its divisors is an integer number (9552060).

Almost surely, 2^869818404 is an apocalyptic number.

869818404 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 869818404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1375496640).

869818404 is an abundant number, since it is smaller than the sum of its proper divisors (1881174876).

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

869818404 is a wasteful number, since it uses less digits than its factorization.

869818404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 48.

The square root of 869818404 is about 29492.6839063521. The cubic root of 869818404 is about 954.5738452970.

The spelling of 869818404 in words is "eight hundred sixty-nine million, eight hundred eighteen thousand, four hundred four".