40307 has 4 divisors (see below), whose sum is σ = 42696. Its totient is φ = 37920.

The previous prime is 40289. The next prime is 40343. The reversal of 40307 is 70304.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40291 and 40300.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 40307.

It is not an unprimeable number, because it can be changed into a prime (40357) 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, 1169 + ... + 1202.

It is an arithmetic number, because the mean of its divisors is an integer number (10674).

2⁴⁰³⁰⁷ is an apocalyptic number.

40307 is a deficient number, since it is larger than the sum of its proper divisors (2389).

40307 is a wasteful number, since it uses less digits than its factorization.

40307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388.

The product of its (nonzero) digits is 84, while the sum is 14.

The square root of 40307 is about 200.7660329837. The cubic root of 40307 is about 34.2867898141.

The spelling of 40307 in words is "forty thousand, three hundred seven", and thus it is an iban number.