394440192 has 100 divisors (see below), whose sum is σ = 1177423896. Its totient is φ = 131466240.

The previous prime is 394440181. The next prime is 394440203. The reversal of 394440192 is 291044493.

It is an interprime number because it is at equal distance from previous prime (394440181) and next prime (394440203).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 9 ways as a sum of consecutive naturals, for example, 36717 + ... + 46227.

Almost surely, 2^394440192 is an apocalyptic number.

394440192 is a gapful number since it is divisible by the number (32) 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 394440192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (588711948).

394440192 is an abundant number, since it is smaller than the sum of its proper divisors (782983704).

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

394440192 is an frugal number, since it uses more digits than its factorization.

394440192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9541 (or 9516 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 394440192 is about 19860.5184222366. The cubic root of 394440192 is about 733.3766086491.

It can be divided in two parts, 3944401 and 92, that added together give a palindrome (3944493).

The spelling of 394440192 in words is "three hundred ninety-four million, four hundred forty thousand, one hundred ninety-two".