400412 has 6 divisors (see below), whose sum is σ = 700728. Its totient is φ = 200204.

The previous prime is 400409. The next prime is 400417. The reversal of 400412 is 214004.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 400393 and 400402.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 400412.

It is not an unprimeable number, because it can be changed into a prime (400417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50048 + ... + 50055.

It is an arithmetic number, because the mean of its divisors is an integer number (116788).

2⁴⁰⁰⁴¹² is an apocalyptic number.

It is an amenable number.

400412 is a deficient number, since it is larger than the sum of its proper divisors (300316).

400412 is a wasteful number, since it uses less digits than its factorization.

400412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100107 (or 100105 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 400412 is about 632.7811628043. The cubic root of 400412 is about 73.7059183088.

Adding to 400412 its reverse (214004), we get a palindrome (614416).

The spelling of 400412 in words is "four hundred thousand, four hundred twelve", and thus it is an iban number.