109441391 has 2 divisors, whose sum is σ = 109441392. Its totient is φ = 109441390.

The previous prime is 109441363. The next prime is 109441399. The reversal of 109441391 is 193144901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 109441391 - 2²⁶ = 42332527 is a prime.

It is equal to p_6273077 and since 109441391 and 6273077 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109441399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54720695 + 54720696.

It is an arithmetic number, because the mean of its divisors is an integer number (54720696).

Almost surely, 2^109441391 is an apocalyptic number.

109441391 is a deficient number, since it is larger than the sum of its proper divisors (1).

109441391 is an equidigital number, since it uses as much as digits as its factorization.

109441391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 109441391 is about 10461.4239470542. The cubic root of 109441391 is about 478.3295391034.

The spelling of 109441391 in words is "one hundred nine million, four hundred forty-one thousand, three hundred ninety-one".