7089021 has 24 divisors (see below), whose sum is σ = 10721880. Its totient is φ = 4507776.

The previous prime is 7089011. The next prime is 7089031. The reversal of 7089021 is 1209807.

It is an interprime number because it is at equal distance from previous prime (7089011) and next prime (7089031).

It can be written as a sum of positive squares in 4 ways, for example, as 1863225 + 5225796 = 1365^2 + 2286^2 .

It is a de Polignac number, because none of the positive numbers 2^k-7089021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7089001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40891 + ... + 41063.

It is an arithmetic number, because the mean of its divisors is an integer number (446745).

Almost surely, 2^7089021 is an apocalyptic number.

It is an amenable number.

7089021 is a deficient number, since it is larger than the sum of its proper divisors (3632859).

7089021 is a wasteful number, since it uses less digits than its factorization.

7089021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365 (or 362 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 7089021 is about 2662.5215492086. The cubic root of 7089021 is about 192.1006145830.

The spelling of 7089021 in words is "seven million, eighty-nine thousand, twenty-one".