990895619 has 32 divisors (see below), whose sum is σ = 1220313600. Its totient is φ = 785756160.

The previous prime is 990895613. The next prime is 990895621. The reversal of 990895619 is 916598099.

It is not a de Polignac number, because 990895619 - 2⁴ = 990895603 is a prime.

It is a super-2 number, since 2×990895619² = 1963748255506786322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990895613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1545539 + ... + 1546179.

It is an arithmetic number, because the mean of its divisors is an integer number (38134800).

Almost surely, 2^990895619 is an apocalyptic number.

990895619 is a deficient number, since it is larger than the sum of its proper divisors (229417981).

990895619 is a wasteful number, since it uses less digits than its factorization.

990895619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923.

The product of its (nonzero) digits is 1574640, while the sum is 56.

The square root of 990895619 is about 31478.4945478655. The cubic root of 990895619 is about 996.9559494921.

The spelling of 990895619 in words is "nine hundred ninety million, eight hundred ninety-five thousand, six hundred nineteen".