394136160 has 192 divisors, whose sum is σ = 1434392064. Its totient is φ = 89907200.

The previous prime is 394136159. The next prime is 394136161. The reversal of 394136160 is 61631493.

It is an interprime number because it is at equal distance from previous prime (394136159) and next prime (394136161).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394136161) 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, 87565 + ... + 91955.

It is an arithmetic number, because the mean of its divisors is an integer number (7470792).

Almost surely, 2^394136160 is an apocalyptic number.

394136160 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 394136160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (717196032).

394136160 is an abundant number, since it is smaller than the sum of its proper divisors (1040255904).

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

394136160 is a wasteful number, since it uses less digits than its factorization.

394136160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4437 (or 4429 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 394136160 is about 19852.8627658582. The cubic root of 394136160 is about 733.1881328683.

The spelling of 394136160 in words is "three hundred ninety-four million, one hundred thirty-six thousand, one hundred sixty".