400348 has 12 divisors (see below), whose sum is σ = 754600. Its totient is φ = 184752.

The previous prime is 400339. The next prime is 400381. The reversal of 400348 is 843004.

It is a super-2 number, since 2×400348² = 320557042208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable 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, 3798 + ... + 3901.

2⁴⁰⁰³⁴⁸ is an apocalyptic number.

It is an amenable number.

400348 is a deficient number, since it is larger than the sum of its proper divisors (354252).

400348 is a wasteful number, since it uses less digits than its factorization.

400348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7716 (or 7714 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 400348 is about 632.7305903779. The cubic root of 400348 is about 73.7019911620.

The spelling of 400348 in words is "four hundred thousand, three hundred forty-eight".