394169868 has 48 divisors (see below), whose sum is σ = 1034880000. Its totient is φ = 129723984.

The previous prime is 394169849. The next prime is 394169891. The reversal of 394169868 is 868961493.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14568 + ... + 31631.

It is an arithmetic number, because the mean of its divisors is an integer number (21560000).

Almost surely, 2^394169868 is an apocalyptic number.

It is an amenable number.

394169868 is an abundant number, since it is smaller than the sum of its proper divisors (640710132).

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

394169868 is a wasteful number, since it uses less digits than its factorization.

394169868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46291 (or 46283 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 394169868 is about 19853.7116932829. The cubic root of 394169868 is about 733.2090339371.

It can be divided in two parts, 39416 and 9868, that added together give a square (49284 = 222²).

The spelling of 394169868 in words is "three hundred ninety-four million, one hundred sixty-nine thousand, eight hundred sixty-eight".