400727545 has 16 divisors (see below), whose sum is σ = 500318208. Its totient is φ = 307782720.

The previous prime is 400727533. The next prime is 400727549. The reversal of 400727545 is 545727004.

400727545 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 400727545 - 2¹⁹ = 400203257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400727545.

It is not an unprimeable number, because it can be changed into a prime (400727549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9507 + ... + 29863.

It is an arithmetic number, because the mean of its divisors is an integer number (31269888).

Almost surely, 2^400727545 is an apocalyptic number.

It is an amenable number.

400727545 is a deficient number, since it is larger than the sum of its proper divisors (99590663).

400727545 is a wasteful number, since it uses less digits than its factorization.

400727545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20520.

The product of its (nonzero) digits is 39200, while the sum is 34.

The square root of 400727545 is about 20018.1803618611. The cubic root of 400727545 is about 737.2527456123.

The spelling of 400727545 in words is "four hundred million, seven hundred twenty-seven thousand, five hundred forty-five".