394818480 has 540 divisors, whose sum is σ = 1680374592. Its totient is φ = 82736640.

The previous prime is 394818451. The next prime is 394818481. The reversal of 394818480 is 84818493.

394818480 is a `hidden beast` number, since 3 + 94 + 81 + 8 + 480 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (394818481) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 12736065 + ... + 12736095.

Almost surely, 2^394818480 is an apocalyptic number.

394818480 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 394818480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (840187296).

394818480 is an abundant number, since it is smaller than the sum of its proper divisors (1285556112).

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

394818480 is a wasteful number, since it uses less digits than its factorization.

394818480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 394818480 is about 19870.0397583900. The cubic root of 394818480 is about 733.6109821016.

It can be divided in two parts, 39481 and 8480, that added together give a square (47961 = 219²).

The spelling of 394818480 in words is "three hundred ninety-four million, eight hundred eighteen thousand, four hundred eighty".