16395391 has 8 divisors (see below), whose sum is σ = 16943904. Its totient is φ = 15855840.

The previous prime is 16395371. The next prime is 16395409. The reversal of 16395391 is 19359361.

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

It is a cyclic number.

It is not a de Polignac number, because 16395391 - 2⁵ = 16395359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16395391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16395331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1585 + ... + 5941.

It is an arithmetic number, because the mean of its divisors is an integer number (2117988).

Almost surely, 2^16395391 is an apocalyptic number.

16395391 is a deficient number, since it is larger than the sum of its proper divisors (548513).

16395391 is an equidigital number, since it uses as much as digits as its factorization.

16395391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4481.

The product of its digits is 21870, while the sum is 37.

The square root of 16395391 is about 4049.1222505625. The cubic root of 16395391 is about 254.0430156341.

The spelling of 16395391 in words is "sixteen million, three hundred ninety-five thousand, three hundred ninety-one".