394369 has 2 divisors, whose sum is σ = 394370. Its totient is φ = 394368.

The previous prime is 394367. The next prime is 394393. The reversal of 394369 is 963493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 297025 + 97344 = 545^2 + 312^2 .

It is a cyclic number.

It is not a de Polignac number, because 394369 - 2¹ = 394367 is a prime.

It is a super-2 number, since 2×394369² = 311053816322, which contains 22 as substring.

Together with 394367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (394363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197184 + 197185.

It is an arithmetic number, because the mean of its divisors is an integer number (197185).

2³⁹⁴³⁶⁹ is an apocalyptic number.

It is an amenable number.

394369 is a deficient number, since it is larger than the sum of its proper divisors (1).

394369 is an equidigital number, since it uses as much as digits as its factorization.

394369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 34.

The square root of 394369 is about 627.9880572113. The cubic root of 394369 is about 73.3332483929. Note that the first 3 decimals are identical.

The spelling of 394369 in words is "three hundred ninety-four thousand, three hundred sixty-nine".