9039145 has 4 divisors (see below), whose sum is σ = 10846980. Its totient is φ = 7231312.

The previous prime is 9039143. The next prime is 9039157. The reversal of 9039145 is 5419309.

9039145 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.

It can be written as a sum of positive squares in 2 ways, for example, as 2903616 + 6135529 = 1704^2 + 2477^2 .

It is a cyclic number.

It is not a de Polignac number, because 9039145 - 2¹ = 9039143 is a prime.

It is a super-2 number, since 2×9039145² = 163412284662050, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (9039143) 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, 903910 + ... + 903919.

It is an arithmetic number, because the mean of its divisors is an integer number (2711745).

Almost surely, 2^9039145 is an apocalyptic number.

It is an amenable number.

9039145 is a deficient number, since it is larger than the sum of its proper divisors (1807835).

9039145 is a wasteful number, since it uses less digits than its factorization.

9039145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807834.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 9039145 is about 3006.5170879275. The cubic root of 9039145 is about 208.3095197670.

The spelling of 9039145 in words is "nine million, thirty-nine thousand, one hundred forty-five".