11919071 has 2 divisors, whose sum is σ = 11919072. Its totient is φ = 11919070.

The previous prime is 11919067. The next prime is 11919079. The reversal of 11919071 is 17091911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11919071 - 2² = 11919067 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11919079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5959535 + 5959536.

It is an arithmetic number, because the mean of its divisors is an integer number (5959536).

Almost surely, 2^11919071 is an apocalyptic number.

11919071 is a deficient number, since it is larger than the sum of its proper divisors (1).

11919071 is an equidigital number, since it uses as much as digits as its factorization.

11919071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 567, while the sum is 29.

The square root of 11919071 is about 3452.4007588923. The cubic root of 11919071 is about 228.4270172810.

The spelling of 11919071 in words is "eleven million, nine hundred nineteen thousand, seventy-one".