83905986 has 16 divisors (see below), whose sum is σ = 171715104. Its totient is φ = 27318144.

The previous prime is 83905949. The next prime is 83906023. The reversal of 83905986 is 68950938.

It is an interprime number because it is at equal distance from previous prime (83905949) and next prime (83906023).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162351 + ... + 162866.

It is an arithmetic number, because the mean of its divisors is an integer number (10732194).

Almost surely, 2^83905986 is an apocalyptic number.

83905986 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

83905986 is an abundant number, since it is smaller than the sum of its proper divisors (87809118).

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

83905986 is a wasteful number, since it uses less digits than its factorization.

83905986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325265.

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 83905986 is about 9160.0210698448. The cubic root of 83905986 is about 437.7884656495.

The spelling of 83905986 in words is "eighty-three million, nine hundred five thousand, nine hundred eighty-six".