40413 has 8 divisors (see below), whose sum is σ = 56800. Its totient is φ = 25488.

The previous prime is 40387. The next prime is 40423. The reversal of 40413 is 31404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40413 - 2⁹ = 39901 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40423) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 298 + ... + 411.

It is an arithmetic number, because the mean of its divisors is an integer number (7100).

2⁴⁰⁴¹³ is an apocalyptic number.

It is an amenable number.

40413 is a deficient number, since it is larger than the sum of its proper divisors (16387).

40413 is a wasteful number, since it uses less digits than its factorization.

40413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 40413 is about 201.0298485300. The cubic root of 40413 is about 34.3168194900.

Subtracting from 40413 its sum of digits (12), we obtain a square (40401 = 201²).

Adding to 40413 its reverse (31404), we get a palindrome (71817).

Subtracting from 40413 its reverse (31404), we obtain a palindrome (9009).

The spelling of 40413 in words is "forty thousand, four hundred thirteen".