40349 has 4 divisors (see below), whose sum is σ = 40764. Its totient is φ = 39936.

The previous prime is 40343. The next prime is 40351. The reversal of 40349 is 94304.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 28900 + 11449 = 170^2 + 107^2 .

It is a cyclic number.

It is not a de Polignac number, because 40349 - 2⁸ = 40093 is a prime.

It is a Duffinian number.

40349 is an undulating number in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 40349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40343) 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, 29 + ... + 285.

It is an arithmetic number, because the mean of its divisors is an integer number (10191).

2⁴⁰³⁴⁹ is an apocalyptic number.

It is an amenable number.

40349 is a deficient number, since it is larger than the sum of its proper divisors (415).

40349 is a wasteful number, since it uses less digits than its factorization.

40349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 40349 is about 200.8706051168. The cubic root of 40349 is about 34.2986946552.

The spelling of 40349 in words is "forty thousand, three hundred forty-nine".