9928487 has 2 divisors, whose sum is σ = 9928488. Its totient is φ = 9928486.

The previous prime is 9928453. The next prime is 9928537. The reversal of 9928487 is 7848299.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9928487 - 2⁸ = 9928231 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 (9922487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4964243 + 4964244.

It is an arithmetic number, because the mean of its divisors is an integer number (4964244).

Almost surely, 2^9928487 is an apocalyptic number.

9928487 is a deficient number, since it is larger than the sum of its proper divisors (1).

9928487 is an equidigital number, since it uses as much as digits as its factorization.

9928487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 47.

The square root of 9928487 is about 3150.9501741538. The cubic root of 9928487 is about 214.9286729323.

The spelling of 9928487 in words is "nine million, nine hundred twenty-eight thousand, four hundred eighty-seven".