400782055927 has 16 divisors (see below), whose sum is σ = 456758184960. Its totient is φ = 348346036800.

The previous prime is 400782055913. The next prime is 400782055931. The reversal of 400782055927 is 729550287004.

It is a cyclic number.

It is not a de Polignac number, because 400782055927 - 2¹⁹ = 400781531639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400782055327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7051902 + ... + 7108507.

It is an arithmetic number, because the mean of its divisors is an integer number (28547386560).

Almost surely, 2^400782055927 is an apocalyptic number.

400782055927 is a deficient number, since it is larger than the sum of its proper divisors (55976129033).

400782055927 is a wasteful number, since it uses less digits than its factorization.

400782055927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14160534.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 400782055927 in words is "four hundred billion, seven hundred eighty-two million, fifty-five thousand, nine hundred twenty-seven".