40319 has 4 divisors (see below), whose sum is σ = 42096. Its totient is φ = 38544.

The previous prime is 40289. The next prime is 40343. The reversal of 40319 is 91304.

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

It is a cyclic number.

It is not a de Polignac number, because 40319 - 2⁸ = 40063 is a prime.

It is a super-2 number, since 2×40319² = 3251243522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40297 and 40306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40519) 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, 854 + ... + 899.

It is an arithmetic number, because the mean of its divisors is an integer number (10524).

2⁴⁰³¹⁹ is an apocalyptic number.

40319 is a deficient number, since it is larger than the sum of its proper divisors (1777).

40319 is a wasteful number, since it uses less digits than its factorization.

40319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 40319 is about 200.7959162931. The cubic root of 40319 is about 34.2901920408.

The spelling of 40319 in words is "forty thousand, three hundred nineteen".