990380619 has 12 divisors (see below), whose sum is σ = 1433098056. Its totient is φ = 659077632.

The previous prime is 990380609. The next prime is 990380623. The reversal of 990380619 is 916083099.

It is not a de Polignac number, because 990380619 - 2¹⁶ = 990315083 is a prime.

It is a super-2 number, since 2×990380619² = 1961707540981646322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (990380609) 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 11 ways as a sum of consecutive naturals, for example, 92662 + ... + 102795.

It is an arithmetic number, because the mean of its divisors is an integer number (119424838).

Almost surely, 2^990380619 is an apocalyptic number.

990380619 is a deficient number, since it is larger than the sum of its proper divisors (442717437).

990380619 is a wasteful number, since it uses less digits than its factorization.

990380619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196026 (or 196023 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 990380619 is about 31470.3132968199. The cubic root of 990380619 is about 996.7832029792.

The spelling of 990380619 in words is "nine hundred ninety million, three hundred eighty thousand, six hundred nineteen".