394134930 has 192 divisors, whose sum is σ = 1263375360. Its totient is φ = 87181920.

The previous prime is 394134901. The next prime is 394134941. The reversal of 394134930 is 39431493.

It is a super-2 number, since 2×394134930² = 310684686092209800, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12714015 + ... + 12714045.

It is an arithmetic number, because the mean of its divisors is an integer number (6580080).

Almost surely, 2^394134930 is an apocalyptic number.

394134930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 394134930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (631687680).

394134930 is an abundant number, since it is smaller than the sum of its proper divisors (869240430).

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

394134930 is an equidigital number, since it uses as much as digits as its factorization.

394134930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 394134930 is about 19852.8317879339. The cubic root of 394134930 is about 733.1873701688.

The spelling of 394134930 in words is "three hundred ninety-four million, one hundred thirty-four thousand, nine hundred thirty".