40412 has 6 divisors (see below), whose sum is σ = 70728. Its totient is φ = 20204.

The previous prime is 40387. The next prime is 40423. The reversal of 40412 is 21404.

It is a junction number, because it is equal to n+sod(n) for n = 40393 and 40402.

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 40412.

It is an unprimeable number.

40412 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5048 + ... + 5055.

It is an arithmetic number, because the mean of its divisors is an integer number (11788).

2⁴⁰⁴¹² is an apocalyptic number.

It is an amenable number.

40412 is a deficient number, since it is larger than the sum of its proper divisors (30316).

40412 is a wasteful number, since it uses less digits than its factorization.

40412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10107 (or 10105 counting only the distinct ones).

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

The square root of 40412 is about 201.0273613218. The cubic root of 40412 is about 34.3165364367.

Subtracting from 40412 its sum of digits (11), we obtain a square (40401 = 201²).

Adding to 40412 its reverse (21404), we get a palindrome (61816).

The spelling of 40412 in words is "forty thousand, four hundred twelve", and thus it is an iban number.