11155399 has 2 divisors, whose sum is σ = 11155400. Its totient is φ = 11155398.

The previous prime is 11155373. The next prime is 11155409. The reversal of 11155399 is 99355111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11155399 - 2⁷ = 11155271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11152399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5577699 + 5577700.

It is an arithmetic number, because the mean of its divisors is an integer number (5577700).

Almost surely, 2^11155399 is an apocalyptic number.

11155399 is a deficient number, since it is larger than the sum of its proper divisors (1).

11155399 is an equidigital number, since it uses as much as digits as its factorization.

11155399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6075, while the sum is 34.

The square root of 11155399 is about 3339.9699100441. The cubic root of 11155399 is about 223.4404013740.

The spelling of 11155399 in words is "eleven million, one hundred fifty-five thousand, three hundred ninety-nine".