394651 has 4 divisors (see below), whose sum is σ = 401400. Its totient is φ = 387904.

The previous prime is 394643. The next prime is 394673. The reversal of 394651 is 156493.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 394651 - 2³ = 394643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3286 + ... + 3403.

It is an arithmetic number, because the mean of its divisors is an integer number (100350).

2³⁹⁴⁶⁵¹ is an apocalyptic number.

394651 is a deficient number, since it is larger than the sum of its proper divisors (6749).

394651 is an equidigital number, since it uses as much as digits as its factorization.

394651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6748.

The product of its digits is 3240, while the sum is 28.

The square root of 394651 is about 628.2125436506. The cubic root of 394651 is about 73.3507236076.

The spelling of 394651 in words is "three hundred ninety-four thousand, six hundred fifty-one".