16411391 has 2 divisors, whose sum is σ = 16411392. Its totient is φ = 16411390.

The previous prime is 16411363. The next prime is 16411393. The reversal of 16411391 is 19311461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16411391 - 2¹⁴ = 16395007 is a prime.

Together with 16411393, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16411391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16411393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8205695 + 8205696.

It is an arithmetic number, because the mean of its divisors is an integer number (8205696).

Almost surely, 2^16411391 is an apocalyptic number.

16411391 is a deficient number, since it is larger than the sum of its proper divisors (1).

16411391 is an equidigital number, since it uses as much as digits as its factorization.

16411391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 26.

The square root of 16411391 is about 4051.0975056150. The cubic root of 16411391 is about 254.1256276061.

The spelling of 16411391 in words is "sixteen million, four hundred eleven thousand, three hundred ninety-one".