40705 has 8 divisors (see below), whose sum is σ = 55872. Its totient is φ = 27888.

The previous prime is 40699. The next prime is 40709. The reversal of 40705 is 50704.

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

It is not a de Polignac number, because 40705 - 2³ = 40697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 547 + ... + 616.

It is an arithmetic number, because the mean of its divisors is an integer number (6984).

It is a Proth number, since it is equal to 159 ⋅ 2⁸ + 1 and 159 < 2⁸.

2⁴⁰⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

40705 is a deficient number, since it is larger than the sum of its proper divisors (15167).

40705 is a wasteful number, since it uses less digits than its factorization.

40705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175.

The product of its (nonzero) digits is 140, while the sum is 16.

The square root of 40705 is about 201.7548016777. The cubic root of 40705 is about 34.3992721137.

Subtracting 40705 from its reverse (50704), we obtain a palindrome (9999).

The spelling of 40705 in words is "forty thousand, seven hundred five".