4388191 has 2 divisors, whose sum is σ = 4388192. Its totient is φ = 4388190.

The previous prime is 4388179. The next prime is 4388201. The reversal of 4388191 is 1918834.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4388191 - 2⁷ = 4388063 is a prime.

4388191 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4388171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2194095 + 2194096.

It is an arithmetic number, because the mean of its divisors is an integer number (2194096).

Almost surely, 2^4388191 is an apocalyptic number.

4388191 is a deficient number, since it is larger than the sum of its proper divisors (1).

4388191 is an equidigital number, since it uses as much as digits as its factorization.

4388191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 34.

The square root of 4388191 is about 2094.8009451974. The cubic root of 4388191 is about 163.7175263383.

The spelling of 4388191 in words is "four million, three hundred eighty-eight thousand, one hundred ninety-one".