87083890 has 16 divisors (see below), whose sum is σ = 158899608. Its totient is φ = 34356096.

The previous prime is 87083873. The next prime is 87083921. The reversal of 87083890 is 9838078.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 55398249 + 31685641 = 7443^2 + 5629^2 .

It is an unprimeable number.

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, 58917 + ... + 60376.

Almost surely, 2^87083890 is an apocalyptic number.

87083890 is a deficient number, since it is larger than the sum of its proper divisors (71815718).

87083890 is a wasteful number, since it uses less digits than its factorization.

87083890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119373.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 87083890 is about 9331.8749455830. The cubic root of 87083890 is about 443.2471380971.

The spelling of 87083890 in words is "eighty-seven million, eighty-three thousand, eight hundred ninety".