8973021 has 8 divisors (see below), whose sum is σ = 12040864. Its totient is φ = 5943600.

The previous prime is 8973007. The next prime is 8973023. The reversal of 8973021 is 1203798.

It is a happy number.

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

It is not a de Polignac number, because 8973021 - 2¹⁷ = 8841949 is a prime.

It is the 2996-th Hogben number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8973021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8973023) by changing a digit.

It is a nontrivial repunit in base 2995.

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, 9055 + ... + 9996.

It is an arithmetic number, because the mean of its divisors is an integer number (1505108).

Almost surely, 2^8973021 is an apocalyptic number.

It is an amenable number.

8973021 is a deficient number, since it is larger than the sum of its proper divisors (3067843).

8973021 is a wasteful number, since it uses less digits than its factorization.

8973021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19211.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 8973021 is about 2995.5001251878. The cubic root of 8973021 is about 207.8003276757.

The spelling of 8973021 in words is "eight million, nine hundred seventy-three thousand, twenty-one".