16394069 has 4 divisors (see below), whose sum is σ = 17358444. Its totient is φ = 15429696.

The previous prime is 16394057. The next prime is 16394089. The reversal of 16394069 is 96049361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96049361 = 6653 ⋅14437.

It can be written as a sum of positive squares in 2 ways, for example, as 7091569 + 9302500 = 2663^2 + 3050^2 .

It is a cyclic number.

It is not a de Polignac number, because 16394069 - 2²⁰ = 15345493 is a prime.

It is a super-2 number, since 2×16394069² = 537530996753522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16394089) 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, 482162 + ... + 482195.

It is an arithmetic number, because the mean of its divisors is an integer number (4339611).

Almost surely, 2^16394069 is an apocalyptic number.

It is an amenable number.

16394069 is a deficient number, since it is larger than the sum of its proper divisors (964375).

16394069 is an equidigital number, since it uses as much as digits as its factorization.

16394069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964374.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 16394069 is about 4048.9590020152. The cubic root of 16394069 is about 254.0361874165.

The spelling of 16394069 in words is "sixteen million, three hundred ninety-four thousand, sixty-nine".