40407 has 4 divisors (see below), whose sum is σ = 53880. Its totient is φ = 26936.

The previous prime is 40387. The next prime is 40423. The reversal of 40407 is 70404.

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 40407 - 2⁶ = 40343 is a prime.

It is a D-number.

40407 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 40407.

It is not an unprimeable number, because it can be changed into a prime (40427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6732 + ... + 6737.

It is an arithmetic number, because the mean of its divisors is an integer number (13470).

2⁴⁰⁴⁰⁷ is an apocalyptic number.

40407 is a deficient number, since it is larger than the sum of its proper divisors (13473).

40407 is a wasteful number, since it uses less digits than its factorization.

40407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13472.

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 40407 is about 201.0149248190. The cubic root of 40407 is about 34.3151211000.

The spelling of 40407 in words is "forty thousand, four hundred seven", and thus it is an iban number.