9990727 has 2 divisors, whose sum is σ = 9990728.
Its totient is φ = 9990726.
The previous prime is 9990689. The next prime is 9990731. The reversal of 9990727 is 7270999.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 9990727 - 223 = 1602119 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (9990737) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a good prime.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4995363 + 4995364.
It is an arithmetic number, because the mean of its divisors is an integer number (4995364).
Almost surely, 29990727 is an apocalyptic number.
9990727 is a deficient number, since it is larger than the sum of its proper divisors (1).
9990727 is an equidigital number, since it uses as much as digits as its factorization.
9990727 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 71442, while the sum is 43.
The square root of 9990727 is about 3160.8111300741.
The cubic root of 9990727 is about 215.3768548322.
The spelling of 9990727 in words is "nine million, nine hundred ninety thousand, seven hundred twenty-seven".