990097 has 8 divisors (see below), whose sum is σ = 1058400. Its totient is φ = 922944.

The previous prime is 990053. The next prime is 990137. The reversal of 990097 is 790099.

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 990097 - 2¹⁹ = 465809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990037) 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, 2154 + ... + 2572.

It is an arithmetic number, because the mean of its divisors is an integer number (132300).

2⁹⁹⁰⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

990097 is a deficient number, since it is larger than the sum of its proper divisors (68303).

990097 is a wasteful number, since it uses less digits than its factorization.

990097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575.

The product of its (nonzero) digits is 5103, while the sum is 34.

The square root of 990097 is about 995.0361802467. The cubic root of 990097 is about 99.6688043051.

The spelling of 990097 in words is "nine hundred ninety thousand, ninety-seven".