990619 has 8 divisors (see below), whose sum is σ = 1156608. Its totient is φ = 830760.

The previous prime is 990599. The next prime is 990631. The reversal of 990619 is 916099.

It is a happy number.

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

It is not a de Polignac number, because 990619 - 2¹¹ = 988571 is a prime.

It is a super-2 number, since 2×990619² = 1962652006322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990719) 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 7 ways as a sum of consecutive naturals, for example, 1177 + ... + 1834.

It is an arithmetic number, because the mean of its divisors is an integer number (144576).

2⁹⁹⁰⁶¹⁹ is an apocalyptic number.

990619 is a deficient number, since it is larger than the sum of its proper divisors (165989).

990619 is a wasteful number, since it uses less digits than its factorization.

990619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3065.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 990619 is about 995.2984477030. The cubic root of 990619 is about 99.6863170590.

The spelling of 990619 in words is "nine hundred ninety thousand, six hundred nineteen".