11929487 has 2 divisors, whose sum is σ = 11929488. Its totient is φ = 11929486.

The previous prime is 11929457. The next prime is 11929499. The reversal of 11929487 is 78492911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11929487 - 2⁸ = 11929231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11929457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5964743 + 5964744.

It is an arithmetic number, because the mean of its divisors is an integer number (5964744).

Almost surely, 2^11929487 is an apocalyptic number.

11929487 is a deficient number, since it is larger than the sum of its proper divisors (1).

11929487 is an equidigital number, since it uses as much as digits as its factorization.

11929487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 41.

The square root of 11929487 is about 3453.9089449492. The cubic root of 11929487 is about 228.4935382110.

The spelling of 11929487 in words is "eleven million, nine hundred twenty-nine thousand, four hundred eighty-seven".