16890069 has 16 divisors (see below), whose sum is σ = 27092480. Its totient is φ = 9143280.

The previous prime is 16890053. The next prime is 16890079. The reversal of 16890069 is 96009861.

It is not a de Polignac number, because 16890069 - 2⁴ = 16890053 is a prime.

It is a super-2 number, since 2×16890069² = 570548861649522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16890079) 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 15 ways as a sum of consecutive naturals, for example, 20767 + ... + 21564.

It is an arithmetic number, because the mean of its divisors is an integer number (1693280).

Almost surely, 2^16890069 is an apocalyptic number.

16890069 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16890069 is a deficient number, since it is larger than the sum of its proper divisors (10202411).

16890069 is a wasteful number, since it uses less digits than its factorization.

16890069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42360.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 16890069 is about 4109.7529122807. The cubic root of 16890069 is about 256.5727178130.

The spelling of 16890069 in words is "sixteen million, eight hundred ninety thousand, sixty-nine".