400346 has 8 divisors (see below), whose sum is σ = 613440. Its totient is φ = 195868.

The previous prime is 400339. The next prime is 400381. The reversal of 400346 is 643004.

400346 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

400346 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2036 + ... + 2223.

It is an arithmetic number, because the mean of its divisors is an integer number (76680).

2⁴⁰⁰³⁴⁶ is an apocalyptic number.

400346 is a deficient number, since it is larger than the sum of its proper divisors (213094).

400346 is a wasteful number, since it uses less digits than its factorization.

400346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4308.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 400346 is about 632.7290099245. The cubic root of 400346 is about 73.7018684319.

The spelling of 400346 in words is "four hundred thousand, three hundred forty-six".