16041391 has 4 divisors (see below), whose sum is σ = 16051984. Its totient is φ = 16030800.

The previous prime is 16041371. The next prime is 16041397. The reversal of 16041391 is 19314061.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 16041391 - 2⁵ = 16041359 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 (16041397) 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, 2550 + ... + 6211.

It is an arithmetic number, because the mean of its divisors is an integer number (4012996).

Almost surely, 2^16041391 is an apocalyptic number.

16041391 is a deficient number, since it is larger than the sum of its proper divisors (10593).

16041391 is an equidigital number, since it uses as much as digits as its factorization.

16041391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10592.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 16041391 is about 4005.1705331983. The cubic root of 16041391 is about 252.2013120107.

The spelling of 16041391 in words is "sixteen million, forty-one thousand, three hundred ninety-one".