394323900 has 72 divisors (see below), whose sum is σ = 1143676800. Its totient is φ = 104898240.

The previous prime is 394323899. The next prime is 394323901. The reversal of 394323900 is 9323493.

It is an interprime number because it is at equal distance from previous prime (394323899) and next prime (394323901).

It is a super-2 number, since 2×394323900² = 310982676222420000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394323901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 144751 + ... + 147449.

It is an arithmetic number, because the mean of its divisors is an integer number (15884400).

Almost surely, 2^394323900 is an apocalyptic number.

394323900 is a gapful number since it is divisible by the number (30) 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 394323900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (571838400).

394323900 is an abundant number, since it is smaller than the sum of its proper divisors (749352900).

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

394323900 is a wasteful number, since it uses less digits than its factorization.

394323900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3203 (or 3196 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 33.

The square root of 394323900 is about 19857.5904882743. The cubic root of 394323900 is about 733.3045282533.

The spelling of 394323900 in words is "three hundred ninety-four million, three hundred twenty-three thousand, nine hundred".