9160021 has 4 divisors (see below), whose sum is σ = 9864652. Its totient is φ = 8455392.

The previous prime is 9160009. The next prime is 9160031. The reversal of 9160021 is 1200619.

9160021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1200619 = 7 ⋅171517.

It can be written as a sum of positive squares in 2 ways, for example, as 4363921 + 4796100 = 2089^2 + 2190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9160021 is a prime.

It is a Duffinian number.

9160021 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9160031) 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, 352296 + ... + 352321.

It is an arithmetic number, because the mean of its divisors is an integer number (2466163).

Almost surely, 2^9160021 is an apocalyptic number.

It is an amenable number.

9160021 is a deficient number, since it is larger than the sum of its proper divisors (704631).

9160021 is a wasteful number, since it uses less digits than its factorization.

9160021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704630.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 9160021 is about 3026.5526593800. The cubic root of 9160021 is about 209.2339512183.

The spelling of 9160021 in words is "nine million, one hundred sixty thousand, twenty-one".