400393650365 has 8 divisors (see below), whose sum is σ = 480755521080. Its totient is φ = 320126159872.

The previous prime is 400393650347. The next prime is 400393650367. The reversal of 400393650365 is 563056393004.

It can be written as a sum of positive squares in 4 ways, for example, as 183645674521 + 216747975844 = 428539^2 + 465562^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400393650365 - 2⁶ = 400393650301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400393650367) 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 7 ways as a sum of consecutive naturals, for example, 23585720 + ... + 23602689.

It is an arithmetic number, because the mean of its divisors is an integer number (60094440135).

Almost surely, 2^400393650365 is an apocalyptic number.

It is an amenable number.

400393650365 is a deficient number, since it is larger than the sum of its proper divisors (80361870715).

400393650365 is a wasteful number, since it uses less digits than its factorization.

400393650365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47190111.

The product of its (nonzero) digits is 874800, while the sum is 44.

The spelling of 400393650365 in words is "four hundred billion, three hundred ninety-three million, six hundred fifty thousand, three hundred sixty-five".