87083819 has 4 divisors (see below), whose sum is σ = 90870096. Its totient is φ = 83297544.

The previous prime is 87083807. The next prime is 87083831. The reversal of 87083819 is 91838078.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91838078 = 2 ⋅45919039.

It is an interprime number because it is at equal distance from previous prime (87083807) and next prime (87083831).

It is a cyclic number.

It is not a de Polignac number, because 87083819 - 2⁴ = 87083803 is a prime.

It is a super-2 number, since 2×87083819² = 15167183063249522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87083819.

It is not an unprimeable number, because it can be changed into a prime (87083869) 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, 1893104 + ... + 1893149.

It is an arithmetic number, because the mean of its divisors is an integer number (22717524).

Almost surely, 2^87083819 is an apocalyptic number.

87083819 is a deficient number, since it is larger than the sum of its proper divisors (3786277).

87083819 is a wasteful number, since it uses less digits than its factorization.

87083819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3786276.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 87083819 is about 9331.8711414164. The cubic root of 87083819 is about 443.2470176364.

The spelling of 87083819 in words is "eighty-seven million, eighty-three thousand, eight hundred nineteen".