990727 has 8 divisors (see below), whose sum is σ = 1036800. Its totient is φ = 945504.

The previous prime is 990719. The next prime is 990733. The reversal of 990727 is 727099.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 990727 - 2³ = 990719 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 990692 and 990701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990707) 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 in 7 ways as a sum of consecutive naturals, for example, 3549 + ... + 3817.

It is an arithmetic number, because the mean of its divisors is an integer number (129600).

2⁹⁹⁰⁷²⁷ is an apocalyptic number.

990727 is a deficient number, since it is larger than the sum of its proper divisors (46073).

990727 is a wasteful number, since it uses less digits than its factorization.

990727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 990727 is about 995.3527013074. The cubic root of 990727 is about 99.6899396192.

The spelling of 990727 in words is "nine hundred ninety thousand, seven hundred twenty-seven".