16385089 has 4 divisors (see below), whose sum is σ = 18725824. Its totient is φ = 14044356.

The previous prime is 16385077. The next prime is 16385099. The reversal of 16385089 is 98058361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16385089 - 2⁷ = 16384961 is a prime.

It is a super-2 number, since 2×16385089² = 536942283075842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16385009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1170357 + ... + 1170370.

It is an arithmetic number, because the mean of its divisors is an integer number (4681456).

Almost surely, 2^16385089 is an apocalyptic number.

It is an amenable number.

16385089 is a deficient number, since it is larger than the sum of its proper divisors (2340735).

16385089 is an equidigital number, since it uses as much as digits as its factorization.

16385089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340734.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 16385089 is about 4047.8499231073. The cubic root of 16385089 is about 253.9897954030.

The spelling of 16385089 in words is "sixteen million, three hundred eighty-five thousand, eighty-nine".