16401383 has 4 divisors (see below), whose sum is σ = 16415880. Its totient is φ = 16386888.

The previous prime is 16401377. The next prime is 16401391. The reversal of 16401383 is 38310461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16401383 - 2¹² = 16397287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16401373) 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, 5393 + ... + 7866.

It is an arithmetic number, because the mean of its divisors is an integer number (4103970).

Almost surely, 2^16401383 is an apocalyptic number.

16401383 is a deficient number, since it is larger than the sum of its proper divisors (14497).

16401383 is a wasteful number, since it uses less digits than its factorization.

16401383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14496.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 16401383 is about 4049.8620964176. The cubic root of 16401383 is about 254.0739601101.

The spelling of 16401383 in words is "sixteen million, four hundred one thousand, three hundred eighty-three".