16443394 has 8 divisors (see below), whose sum is σ = 26907408. Its totient is φ = 7474260.

The previous prime is 16443391. The next prime is 16443397. The reversal of 16443394 is 49334461.

It is an interprime number because it is at equal distance from previous prime (16443391) and next prime (16443397).

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

It is a super-3 number, since 3×16443394³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (16443391) 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, 373692 + ... + 373735.

It is an arithmetic number, because the mean of its divisors is an integer number (3363426).

Almost surely, 2^16443394 is an apocalyptic number.

16443394 is a deficient number, since it is larger than the sum of its proper divisors (10464014).

16443394 is a wasteful number, since it uses less digits than its factorization.

16443394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747440.

The product of its digits is 31104, while the sum is 34.

The square root of 16443394 is about 4055.0454991282. The cubic root of 16443394 is about 254.2907060719.

The spelling of 16443394 in words is "sixteen million, four hundred forty-three thousand, three hundred ninety-four".