16040889 has 8 divisors (see below), whose sum is σ = 23764320. Its totient is φ = 10693908.

The previous prime is 16040887. The next prime is 16040891. The reversal of 16040889 is 98804061.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16040887) and next prime (16040891).

It is not a de Polignac number, because 16040889 - 2¹ = 16040887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16040887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297027 + ... + 297080.

It is an arithmetic number, because the mean of its divisors is an integer number (2970540).

Almost surely, 2^16040889 is an apocalyptic number.

It is an amenable number.

16040889 is a deficient number, since it is larger than the sum of its proper divisors (7723431).

16040889 is an equidigital number, since it uses as much as digits as its factorization.

16040889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594116 (or 594110 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 16040889 is about 4005.1078637160. The cubic root of 16040889 is about 252.1986811836.

The spelling of 16040889 in words is "sixteen million, forty thousand, eight hundred eighty-nine".