394515080 has 16 divisors (see below), whose sum is σ = 887659020. Its totient is φ = 157806016.

The previous prime is 394515061. The next prime is 394515109. The reversal of 394515080 is 80515493.

It can be written as a sum of positive squares in 2 ways, for example, as 393070276 + 1444804 = 19826^2 + 1202^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 394515080.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4931399 + ... + 4931478.

Almost surely, 2^394515080 is an apocalyptic number.

It is an amenable number.

394515080 is an abundant number, since it is smaller than the sum of its proper divisors (493143940).

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

394515080 is a wasteful number, since it uses less digits than its factorization.

394515080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9862888 (or 9862884 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 394515080 is about 19862.4036813272. The cubic root of 394515080 is about 733.4230184160.

The spelling of 394515080 in words is "three hundred ninety-four million, five hundred fifteen thousand, eighty".