990007 has 4 divisors (see below), whose sum is σ = 992736. Its totient is φ = 987280.

The previous prime is 990001. The next prime is 990013. The reversal of 990007 is 700099.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (990001) and next prime (990013).

It is a cyclic number.

It is not a de Polignac number, because 990007 - 2³ = 989999 is a prime.

It is a super-2 number, since 2×990007² = 1960227720098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 990007.

It is not an unprimeable number, because it can be changed into a prime (990001) 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 in 3 ways as a sum of consecutive naturals, for example, 718 + ... + 1579.

It is an arithmetic number, because the mean of its divisors is an integer number (248184).

2⁹⁹⁰⁰⁰⁷ is an apocalyptic number.

990007 is a deficient number, since it is larger than the sum of its proper divisors (2729).

990007 is a wasteful number, since it uses less digits than its factorization.

990007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2728.

The product of its (nonzero) digits is 567, while the sum is 25.

The square root of 990007 is about 994.9909547328. The cubic root of 990007 is about 99.6657842427.

The spelling of 990007 in words is "nine hundred ninety thousand, seven".