86990838 has 32 divisors (see below), whose sum is σ = 190449792. Its totient is φ = 26270400.

The previous prime is 86990837. The next prime is 86990863. The reversal of 86990838 is 83809968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86990831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18553 + ... + 22763.

It is an arithmetic number, because the mean of its divisors is an integer number (5951556).

Almost surely, 2^86990838 is an apocalyptic number.

86990838 is an abundant number, since it is smaller than the sum of its proper divisors (103458954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86990838 is a wasteful number, since it uses less digits than its factorization.

86990838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4540.

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 86990838 is about 9326.8879054055. The cubic root of 86990838 is about 443.0892071182.

The spelling of 86990838 in words is "eighty-six million, nine hundred ninety thousand, eight hundred thirty-eight".