16009090 has 8 divisors (see below), whose sum is σ = 28816380. Its totient is φ = 6403632.

The previous prime is 16009061. The next prime is 16009099. The reversal of 16009090 is 9090061.

It can be written as a sum of positive squares in 2 ways, for example, as 16008001 + 1089 = 4001^2 + 33^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

16009090 is a modest number, since divided by 9090 gives 1600 as remainder.

It is not an unprimeable number, because it can be changed into a prime (16009099) 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, 800445 + ... + 800464.

Almost surely, 2^16009090 is an apocalyptic number.

16009090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16009090 is a deficient number, since it is larger than the sum of its proper divisors (12807290).

16009090 is a wasteful number, since it uses less digits than its factorization.

16009090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600916.

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 16009090 is about 4001.1360886628. The cubic root of 16009090 is about 252.0319204547.

The spelling of 16009090 in words is "sixteen million, nine thousand, ninety".