400164663 has 8 divisors (see below), whose sum is σ = 539981568. Its totient is φ = 263562104.

The previous prime is 400164623. The next prime is 400164679. The reversal of 400164663 is 366461004.

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 400164663 - 2⁶ = 400164599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400164663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400164623) 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 7 ways as a sum of consecutive naturals, for example, 803295 + ... + 803792.

It is an arithmetic number, because the mean of its divisors is an integer number (67497696).

Almost surely, 2^400164663 is an apocalyptic number.

400164663 is a deficient number, since it is larger than the sum of its proper divisors (139816905).

400164663 is a wasteful number, since it uses less digits than its factorization.

400164663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607173.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 400164663 is about 20004.1161514324. The cubic root of 400164663 is about 736.9073898043.

The spelling of 400164663 in words is "four hundred million, one hundred sixty-four thousand, six hundred sixty-three".