8951021 has 4 divisors (see below), whose sum is σ = 8976732. Its totient is φ = 8925312.

The previous prime is 8950987. The next prime is 8951023. The reversal of 8951021 is 1201598.

It is a happy number.

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 3258025 + 5692996 = 1805^2 + 2386^2 .

It is a cyclic number.

It is not a de Polignac number, because 8951021 - 2¹⁴ = 8934637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8951023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12326 + ... + 13031.

It is an arithmetic number, because the mean of its divisors is an integer number (2244183).

Almost surely, 2^8951021 is an apocalyptic number.

It is an amenable number.

8951021 is a deficient number, since it is larger than the sum of its proper divisors (25711).

8951021 is a wasteful number, since it uses less digits than its factorization.

8951021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25710.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 8951021 is about 2991.8256967945. The cubic root of 8951021 is about 207.6303608191.

The spelling of 8951021 in words is "eight million, nine hundred fifty-one thousand, twenty-one".