40417 has 4 divisors (see below), whose sum is σ = 43540. Its totient is φ = 37296.

The previous prime is 40387. The next prime is 40423. The reversal of 40417 is 71404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6561 + 33856 = 81^2 + 184^2 .

It is a cyclic number.

It is not a de Polignac number, because 40417 - 2⁷ = 40289 is a prime.

It is a Duffinian number.

It is a plaindrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 40417.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40427) 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, 1542 + ... + 1567.

It is an arithmetic number, because the mean of its divisors is an integer number (10885).

2⁴⁰⁴¹⁷ is an apocalyptic number.

It is an amenable number.

40417 is a deficient number, since it is larger than the sum of its proper divisors (3123).

40417 is a wasteful number, since it uses less digits than its factorization.

40417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3122.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 40417 is about 201.0397970552. The cubic root of 40417 is about 34.3179516566.

Subtracting from 40417 its sum of digits (16), we obtain a square (40401 = 201²).

The spelling of 40417 in words is "forty thousand, four hundred seventeen", and thus it is an iban number.