400363 has 4 divisors (see below), whose sum is σ = 403200. Its totient is φ = 397528.

The previous prime is 400339. The next prime is 400381. The reversal of 400363 is 363004.

It is a happy number.

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 400363 - 2⁵ = 400331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400313) 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, 1195 + ... + 1492.

It is an arithmetic number, because the mean of its divisors is an integer number (100800).

2⁴⁰⁰³⁶³ is an apocalyptic number.

400363 is a deficient number, since it is larger than the sum of its proper divisors (2837).

400363 is a wasteful number, since it uses less digits than its factorization.

400363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2836.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 400363 is about 632.7424436530. The cubic root of 400363 is about 73.7029116245.

Adding to 400363 its reverse (363004), we get a palindrome (763367).

The spelling of 400363 in words is "four hundred thousand, three hundred sixty-three".