400635485 has 8 divisors (see below), whose sum is σ = 481155000. Its totient is φ = 320246784.

The previous prime is 400635421. The next prime is 400635497. The reversal of 400635485 is 584536004.

It can be written as a sum of positive squares in 4 ways, for example, as 135792409 + 264843076 = 11653^2 + 16274^2 .

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 400635485 - 2⁶ = 400635421 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 25832 + ... + 38321.

It is an arithmetic number, because the mean of its divisors is an integer number (60144375).

Almost surely, 2^400635485 is an apocalyptic number.

It is an amenable number.

400635485 is a deficient number, since it is larger than the sum of its proper divisors (80519515).

400635485 is a wasteful number, since it uses less digits than its factorization.

400635485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65407.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 400635485 is about 20015.8808199889. The cubic root of 400635485 is about 737.1962844026.

The spelling of 400635485 in words is "four hundred million, six hundred thirty-five thousand, four hundred eighty-five".