11928817 has 2 divisors, whose sum is σ = 11928818. Its totient is φ = 11928816.

The previous prime is 11928811. The next prime is 11928821. The reversal of 11928817 is 71882911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11397376 + 531441 = 3376^2 + 729^2 .

It is a cyclic number.

It is not a de Polignac number, because 11928817 - 2³ = 11928809 is a prime.

It is not a weakly prime, because it can be changed into another prime (11928811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5964408 + 5964409.

It is an arithmetic number, because the mean of its divisors is an integer number (5964409).

Almost surely, 2^11928817 is an apocalyptic number.

It is an amenable number.

11928817 is a deficient number, since it is larger than the sum of its proper divisors (1).

11928817 is an equidigital number, since it uses as much as digits as its factorization.

11928817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 37.

The square root of 11928817 is about 3453.8119520321. The cubic root of 11928817 is about 228.4892604765.

The spelling of 11928817 in words is "eleven million, nine hundred twenty-eight thousand, eight hundred seventeen".