9020921 has 8 divisors (see below), whose sum is σ = 11102784. Its totient is φ = 7137360.

The previous prime is 9020917. The next prime is 9020929. The reversal of 9020921 is 1290209.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9020921 - 2² = 9020917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9020929) by changing a digit.

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, 49475 + ... + 49656.

It is an arithmetic number, because the mean of its divisors is an integer number (1387848).

Almost surely, 2^9020921 is an apocalyptic number.

9020921 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

9020921 is a deficient number, since it is larger than the sum of its proper divisors (2081863).

9020921 is a wasteful number, since it uses less digits than its factorization.

9020921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99151.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 9020921 is about 3003.4848093506. The cubic root of 9020921 is about 208.1694332592.

The spelling of 9020921 in words is "nine million, twenty thousand, nine hundred twenty-one".