16008401 has 4 divisors (see below), whose sum is σ = 16024932. Its totient is φ = 15991872.

The previous prime is 16008379. The next prime is 16008403. The reversal of 16008401 is 10480061.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15484225 + 524176 = 3935^2 + 724^2 .

It is a cyclic number.

It is not a de Polignac number, because 16008401 - 2¹⁴ = 15992017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16008403) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6716 + ... + 8781.

It is an arithmetic number, because the mean of its divisors is an integer number (4006233).

Almost surely, 2^16008401 is an apocalyptic number.

It is an amenable number.

16008401 is a deficient number, since it is larger than the sum of its proper divisors (16531).

16008401 is a wasteful number, since it uses less digits than its factorization.

16008401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16530.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 16008401 is about 4001.0499871909. The cubic root of 16008401 is about 252.0283047488.

Adding to 16008401 its reverse (10480061), we get a palindrome (26488462).

It can be divided in two parts, 1600 and 8401, that added together give a palindrome (10001).

The spelling of 16008401 in words is "sixteen million, eight thousand, four hundred one".