40369 has 8 divisors (see below), whose sum is σ = 47360. Its totient is φ = 33696.

The previous prime is 40361. The next prime is 40387. The reversal of 40369 is 96304.

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

It is a cyclic number.

It is not a de Polignac number, because 40369 - 2³ = 40361 is a prime.

It is a super-2 number, since 2×40369² = 3259312322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

40369 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (40361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472 + ... + 550.

It is an arithmetic number, because the mean of its divisors is an integer number (5920).

2⁴⁰³⁶⁹ is an apocalyptic number.

It is an amenable number.

40369 is a deficient number, since it is larger than the sum of its proper divisors (6991).

40369 is an equidigital number, since it uses as much as digits as its factorization.

40369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 40369 is about 200.9203822413. The cubic root of 40369 is about 34.3043607236.

The spelling of 40369 in words is "forty thousand, three hundred sixty-nine".