394157946 has 64 divisors (see below), whose sum is σ = 1012451328. Its totient is φ = 99430848.

The previous prime is 394157927. The next prime is 394157987. The reversal of 394157946 is 649751493.

It is a junction number, because it is equal to n+sod(n) for n = 394157895 and 394157904.

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, 3136 + ... + 28251.

It is an arithmetic number, because the mean of its divisors is an integer number (15819552).

Almost surely, 2^394157946 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394157946, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506225664).

394157946 is an abundant number, since it is smaller than the sum of its proper divisors (618293382).

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

394157946 is a wasteful number, since it uses less digits than its factorization.

394157946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31435.

The product of its digits is 816480, while the sum is 48.

The square root of 394157946 is about 19853.4114448878. The cubic root of 394157946 is about 733.2016416875.

The spelling of 394157946 in words is "three hundred ninety-four million, one hundred fifty-seven thousand, nine hundred forty-six".