394915080 has 128 divisors (see below), whose sum is σ = 1360569600. Its totient is φ = 89828352.

The previous prime is 394915063. The next prime is 394915091. The reversal of 394915080 is 80519493.

It is a super-2 number, since 2×394915080² = 311915840822812800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 191334 + ... + 193386.

It is an arithmetic number, because the mean of its divisors is an integer number (10629450).

Almost surely, 2^394915080 is an apocalyptic number.

394915080 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 394915080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (680284800).

394915080 is an abundant number, since it is smaller than the sum of its proper divisors (965654520).

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

394915080 is a wasteful number, since it uses less digits than its factorization.

394915080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303 (or 2299 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 394915080 is about 19872.4704050604. The cubic root of 394915080 is about 733.6708079419.

The spelling of 394915080 in words is "three hundred ninety-four million, nine hundred fifteen thousand, eighty".