400208 has 10 divisors (see below), whose sum is σ = 775434. Its totient is φ = 200096.

The previous prime is 400207. The next prime is 400217. The reversal of 400208 is 802004.

It can be written as a sum of positive squares in only one way, i.e., 399424 + 784 = 632^2 + 28^2 .

It is a junction number, because it is equal to n+sod(n) for n = 400192 and 400201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12491 + ... + 12522.

2⁴⁰⁰²⁰⁸ is an apocalyptic number.

It is an amenable number.

400208 is a deficient number, since it is larger than the sum of its proper divisors (375226).

400208 is a wasteful number, since it uses less digits than its factorization.

400208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25021 (or 25015 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 400208 is about 632.6199491006. The cubic root of 400208 is about 73.6933990689.

The spelling of 400208 in words is "four hundred thousand, two hundred eight".