921208084 has 48 divisors (see below), whose sum is σ = 1793030400. Its totient is φ = 412304256.

The previous prime is 921208073. The next prime is 921208151. The reversal of 921208084 is 480802129.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 99142 + ... + 108034.

It is an arithmetic number, because the mean of its divisors is an integer number (37354800).

Almost surely, 2^921208084 is an apocalyptic number.

921208084 is a gapful number since it is divisible by the number (94) formed by its first and last digit.

It is an amenable number.

921208084 is a deficient number, since it is larger than the sum of its proper divisors (871822316).

921208084 is a wasteful number, since it uses less digits than its factorization.

921208084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8992 (or 8990 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 921208084 is about 30351.4099178275. The cubic root of 921208084 is about 973.0143534206.

The spelling of 921208084 in words is "nine hundred twenty-one million, two hundred eight thousand, eighty-four".