394149888 has 240 divisors, whose sum is σ = 1289709120. Its totient is φ = 119439360.

The previous prime is 394149859. The next prime is 394149901. The reversal of 394149888 is 888941493.

394149888 is a `hidden beast` number, since 39 + 41 + 498 + 88 = 666.

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

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

Its product of digits (1990656) is a multiple of the sum of its prime divisors (16).

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35831803 + ... + 35831813.

It is an arithmetic number, because the mean of its divisors is an integer number (5373788).

Almost surely, 2^394149888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394149888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (644854560).

394149888 is an abundant number, since it is smaller than the sum of its proper divisors (895559232).

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

394149888 is an frugal number, since it uses more digits than its factorization.

394149888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60 (or 16 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 394149888 is about 19853.2085064354. The cubic root of 394149888 is about 733.1966452310.

The spelling of 394149888 in words is "three hundred ninety-four million, one hundred forty-nine thousand, eight hundred eighty-eight".