91986982 has 32 divisors (see below), whose sum is σ = 149796864. Its totient is φ = 42240000.

The previous prime is 91986967. The next prime is 91986997. The reversal of 91986982 is 28968919.

It is an interprime number because it is at equal distance from previous prime (91986967) and next prime (91986997).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357798 + ... + 358054.

It is an arithmetic number, because the mean of its divisors is an integer number (4681152).

Almost surely, 2^91986982 is an apocalyptic number.

91986982 is a deficient number, since it is larger than the sum of its proper divisors (57809882).

91986982 is a wasteful number, since it uses less digits than its factorization.

91986982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564.

The product of its digits is 559872, while the sum is 52.

The square root of 91986982 is about 9590.9844124574. The cubic root of 91986982 is about 451.4144498238.

The spelling of 91986982 in words is "ninety-one million, nine hundred eighty-six thousand, nine hundred eighty-two".