400054165 has 16 divisors (see below), whose sum is σ = 557642880. Its totient is φ = 269824320.

The previous prime is 400054153. The next prime is 400054169. The reversal of 400054165 is 561450004.

It is not a de Polignac number, because 400054165 - 2⁷ = 400054037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400054169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91555 + ... + 95824.

It is an arithmetic number, because the mean of its divisors is an integer number (34852680).

Almost surely, 2^400054165 is an apocalyptic number.

It is an amenable number.

400054165 is a deficient number, since it is larger than the sum of its proper divisors (157588715).

400054165 is a wasteful number, since it uses less digits than its factorization.

400054165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187452.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 400054165 is about 20001.3540791617. The cubic root of 400054165 is about 736.8395558214.

The spelling of 400054165 in words is "four hundred million, fifty-four thousand, one hundred sixty-five".