11869391 has 2 divisors, whose sum is σ = 11869392. Its totient is φ = 11869390.

The previous prime is 11869387. The next prime is 11869393. The reversal of 11869391 is 19396811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11869391 - 2² = 11869387 is a prime.

Together with 11869393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11869393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5934695 + 5934696.

It is an arithmetic number, because the mean of its divisors is an integer number (5934696).

Almost surely, 2^11869391 is an apocalyptic number.

11869391 is a deficient number, since it is larger than the sum of its proper divisors (1).

11869391 is an equidigital number, since it uses as much as digits as its factorization.

11869391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 38.

The square root of 11869391 is about 3445.1982526409. The cubic root of 11869391 is about 228.1092056620.

The spelling of 11869391 in words is "eleven million, eight hundred sixty-nine thousand, three hundred ninety-one".