16089001 has 4 divisors (see below), whose sum is σ = 16120404. Its totient is φ = 16057600.

The previous prime is 16088959. The next prime is 16089023. The reversal of 16089001 is 10098061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10098061 = 29 ⋅348209.

It can be written as a sum of positive squares in 2 ways, for example, as 11048976 + 5040025 = 3324^2 + 2245^2 .

It is a cyclic number.

It is not a de Polignac number, because 16089001 - 2⁷ = 16088873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16089041) 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 3 ways as a sum of consecutive naturals, for example, 14920 + ... + 15961.

It is an arithmetic number, because the mean of its divisors is an integer number (4030101).

Almost surely, 2^16089001 is an apocalyptic number.

It is an amenable number.

16089001 is a deficient number, since it is larger than the sum of its proper divisors (31403).

16089001 is an equidigital number, since it uses as much as digits as its factorization.

16089001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31402.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 16089001 is about 4011.1096968295. The cubic root of 16089001 is about 252.4505722941.

It can be divided in two parts, 1608 and 9001, that added together give a square (10609 = 103²).

The spelling of 16089001 in words is "sixteen million, eighty-nine thousand, one".