400727 has 4 divisors (see below), whose sum is σ = 406776. Its totient is φ = 394680.

The previous prime is 400723. The next prime is 400739. The reversal of 400727 is 727004.

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 400727 - 2² = 400723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400699 and 400708.

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 400727.

It is not an unprimeable number, because it can be changed into a prime (400721) 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, 2924 + ... + 3057.

It is an arithmetic number, because the mean of its divisors is an integer number (101694).

2⁴⁰⁰⁷²⁷ is an apocalyptic number.

400727 is a deficient number, since it is larger than the sum of its proper divisors (6049).

400727 is an equidigital number, since it uses as much as digits as its factorization.

400727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6048.

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 400727 is about 633.0300150862. The cubic root of 400727 is about 73.7252411384.

The spelling of 400727 in words is "four hundred thousand, seven hundred twenty-seven", and thus it is an iban number.