394921296 has 120 divisors (see below), whose sum is σ = 1377989184. Its totient is φ = 102574080.

The previous prime is 394921283. The next prime is 394921297. The reversal of 394921296 is 692129493.

It is a happy number.

394921296 is a `hidden beast` number, since 39 + 492 + 129 + 6 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394921297) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 6721 + ... + 28896.

Almost surely, 2^394921296 is an apocalyptic number.

394921296 is a gapful number since it is divisible by the number (36) 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 394921296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (688994592).

394921296 is an abundant number, since it is smaller than the sum of its proper divisors (983067888).

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

394921296 is a wasteful number, since it uses less digits than its factorization.

394921296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35649 (or 35640 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 394921296 is about 19872.6268017089. The cubic root of 394921296 is about 733.6746572706.

The spelling of 394921296 in words is "three hundred ninety-four million, nine hundred twenty-one thousand, two hundred ninety-six".