16093391 has 4 divisors (see below), whose sum is σ = 16120512. Its totient is φ = 16066272.

The previous prime is 16093387. The next prime is 16093393. The reversal of 16093391 is 19339061.

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 16093391 - 2² = 16093387 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 (16093393) 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, 12650 + ... + 13863.

It is an arithmetic number, because the mean of its divisors is an integer number (4030128).

Almost surely, 2^16093391 is an apocalyptic number.

16093391 is a deficient number, since it is larger than the sum of its proper divisors (27121).

16093391 is an equidigital number, since it uses as much as digits as its factorization.

16093391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27120.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 16093391 is about 4011.6568896156. The cubic root of 16093391 is about 252.4735311927.

The spelling of 16093391 in words is "sixteen million, ninety-three thousand, three hundred ninety-one".