40747 has 4 divisors (see below), whose sum is σ = 46576. Its totient is φ = 34920.

The previous prime is 40739. The next prime is 40751. The reversal of 40747 is 74704.

It is a happy number.

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 40747 - 2³ = 40739 is a prime.

It is a Duffinian number.

40747 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (40787) 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, 2904 + ... + 2917.

It is an arithmetic number, because the mean of its divisors is an integer number (11644).

2⁴⁰⁷⁴⁷ is an apocalyptic number.

40747 is a deficient number, since it is larger than the sum of its proper divisors (5829).

40747 is an equidigital number, since it uses as much as digits as its factorization.

40747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5828.

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 40747 is about 201.8588615840. The cubic root of 40747 is about 34.4110992668.

It can be divided in two parts, 407 and 47, that added together give a palindrome (454).

The spelling of 40747 in words is "forty thousand, seven hundred forty-seven", and thus it is an iban number.