394903296 has 288 divisors, whose sum is σ = 1281996800. Its totient is φ = 119439360.

The previous prime is 394903291. The next prime is 394903321. The reversal of 394903296 is 692309493.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×394903296² = 311897226383327232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394903291) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4071120 + ... + 4071216.

Almost surely, 2^394903296 is an apocalyptic number.

394903296 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 394903296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (640998400).

394903296 is an abundant number, since it is smaller than the sum of its proper divisors (887093504).

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

394903296 is a wasteful number, since it uses less digits than its factorization.

394903296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 45.

The square root of 394903296 is about 19872.1739122825. The cubic root of 394903296 is about 733.6635104551.

The spelling of 394903296 in words is "three hundred ninety-four million, nine hundred three thousand, two hundred ninety-six".