16400485 has 8 divisors (see below), whose sum is σ = 19703160. Its totient is φ = 13105344.

The previous prime is 16400473. The next prime is 16400513. The reversal of 16400485 is 58400461.

It can be written as a sum of positive squares in 4 ways, for example, as 3996001 + 12404484 = 1999^2 + 3522^2 .

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 16400485 - 2⁵ = 16400453 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5671 + ... + 8059.

It is an arithmetic number, because the mean of its divisors is an integer number (2462895).

Almost surely, 2^16400485 is an apocalyptic number.

It is an amenable number.

16400485 is a deficient number, since it is larger than the sum of its proper divisors (3302675).

16400485 is a wasteful number, since it uses less digits than its factorization.

16400485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3767.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 16400485 is about 4049.7512269274. The cubic root of 16400485 is about 254.0693230503.

The spelling of 16400485 in words is "sixteen million, four hundred thousand, four hundred eighty-five".