8996921 has 4 divisors (see below), whose sum is σ = 9098100. Its totient is φ = 8895744.

The previous prime is 8996903. The next prime is 8996941. The reversal of 8996921 is 1296998.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1357225 + 7639696 = 1165^2 + 2764^2 .

It is a cyclic number.

It is not a de Polignac number, because 8996921 - 2⁶ = 8996857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8996941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50456 + ... + 50633.

It is an arithmetic number, because the mean of its divisors is an integer number (2274525).

Almost surely, 2^8996921 is an apocalyptic number.

It is an amenable number.

8996921 is a deficient number, since it is larger than the sum of its proper divisors (101179).

8996921 is a wasteful number, since it uses less digits than its factorization.

8996921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101178.

The product of its digits is 69984, while the sum is 44.

The square root of 8996921 is about 2999.4867894358. The cubic root of 8996921 is about 207.9846589400.

It can be divided in two parts, 89 and 96921, that multiplied together give a square (8625969 = 2937²).

The spelling of 8996921 in words is "eight million, nine hundred ninety-six thousand, nine hundred twenty-one".