9070021 has 4 divisors (see below), whose sum is σ = 9084172. Its totient is φ = 9055872.

The previous prime is 9070007. The next prime is 9070043. The reversal of 9070021 is 1200709.

9070021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is the 1230-th star 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 4601025 + 4468996 = 2145^2 + 2114^2 .

It is a cyclic number.

It is not a de Polignac number, because 9070021 - 2⁵ = 9069989 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 (9070001) 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, 6066 + ... + 7411.

It is an arithmetic number, because the mean of its divisors is an integer number (2271043).

Almost surely, 2^9070021 is an apocalyptic number.

It is an amenable number.

9070021 is a deficient number, since it is larger than the sum of its proper divisors (14151).

9070021 is a wasteful number, since it uses less digits than its factorization.

9070021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14150.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 9070021 is about 3011.6475557409. The cubic root of 9070021 is about 208.5464321213.

The spelling of 9070021 in words is "nine million, seventy thousand, twenty-one".